Free 16-Week Training Plan for Hiroshima Ultra-Trail by UTMB HIROSHIMA 50K
Train for steep Japanese ridge trails, stairs and roots, and humid spring air.
At 49 km with 2,800 m of climbing, this distance challenges both endurance and climbing ability without the time-management demands of a full ultra. At 57 m of vertical per kilometer, much of the course is runnable — the plan focuses on building your aerobic cruising speed while preparing you for the steeper sections. The official cutoff is 13.5 hours, so pace management starts from week one.
Race date: Sat, 10 April 2027Open entry49 km · 2,800 mStart: 08:00
Race prep workspace
Continue Hiroshima Ultra-Trail by UTMB HIROSHIMA 50K
Your race plan, next route workout, official GPX, fueling, cutoff, weather, and calendar link in one place.
I'm preparing for Hiroshima Ultra-Trail by UTMB HIROSHIMA 50K. Here is the public training preview.
49 km · +2,800 m · 190 days to race day
Public preview only; my private routes and schedule changes are not included.
Plan: https://trailsplits.com/races/hiroshima-ultra-trail-by-utmb-hiroshima-50k/training-plan?tier=strong-finish&strength=1&strength_track=no-gym&engine=unified&days=3
No account needed. A kept plan stays on this browser until its storage is cleared; find it under My kept plans, where you can also change single weeks.
Optional account and live calendar
Save it to your account, subscribe once, then adjust concrete dates as life changes.
Signed-in plan changes save automatically and update the same personal calendar URL.
Use the snapshot calendar without an account, or sign in for autosave.
Choose a subscription that refreshes, or download a one-time copy.
Terrain autopilot
Find a matching route near you
We'll look for a loop near you that matches your next run (1h 00m · ~6.3 km · +300 m)
and rehearses the 57 m/km demand of HIROSHIMA 50K.
Terrain intel
Granite ridge singletrack, stone steps and steep forest paths typical of Japanese trail racing — short, sharp and relentless rather than alpine.
Weather & kit
Early April is mild and often damp, with cherry-blossom season warmth by day and cool evenings.
What this plan focuses on
Train steps and very steep short climbs.
Practise technical root and granite descending.
Prepare for humidity rather than heat.
Build calf and achilles durability.
Rehearse frequent gradient changes with no steady rhythm.
Unified race plan · beta
Uses the same load, recovery and taper rules as race discovery, with course-specific climbing only because this course has verified elevation.
Use it for race-effort sessions and race day. Easy runs stay easy whatever the goal; the plan's efforts come from how you run now.
Your starting point
Not stated. The plan assumes a typical starting week for this race and opens at 4h 50m of running.
Fit the plan to your recent training
This schedule opens at 4h 50m of running and 750 m of climbing in week one and peaks at 8h 10m and 2,250 m in a week; the longest planned outing is 3h 30m. These are prescriptions, not proof of readiness.
Adjust this plan
Swap concrete training days, or mark a day done/skipped without changing the race-specific template.
Calendar subscriptions refresh on the calendar app's schedule. This calendar export uses the selected start date and includes weekly summaries and any pre-base sessions. Use Keep this plan above for a fixed copy of the displayed race schedule.
Route-aware workouts
Key sessions include route buttons that deep-link into the Planner with pre-filled distance
+ elevation filters.
16.5 min/km average required. At an easy all-day pace the course takes about 11.5 h of the 13.5 h allowed.
That leaves little margin: a bad patch, the weather or an intermediate cutoff can decide the day, and more training buys less time on a course like this than it seems.For a first time, Hiroshima Ultra-Trail by UTMB HIROSHIMA 25K on the same weekend is the safer choice.
Training emphasis: rolling aerobic speed, moderate hill repeats, and disciplined pacing.
Plan summary
The block begins on 2026-12-21, 11 weeks from now.
Duration
16 weeks
Start
2026-12-21
Peak weekly time
8h 10m
Peak weekly vert
2,250 m
Week 1Base Building
4h 50m ·
750 m vert
Mon · 2026-12-21rest
Rest
Effort: Rest
Rest or gentle mobility.
Tue · 2026-12-22hills
Easy hills + uphill strides
1h 00m · 300 m vert · ~6.3 km
Effort: Easy; strides strong but relaxed
Start with 10 minutes easy on rolling terrain. Then 6 x 20 seconds uphill strides, strong but relaxed, walking back down between them. Finish with at least 10 minutes easy; the rest of the run is easy on the hills.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session A: Bulgarian split squat, single-leg RDL, step-ups (bench/stairs), calf raises, side plank. Quality reps; stop well before failure. If 10 reps feels easy, add weight (backpack/water) so the last 2 reps feel challenging. In peak weeks, keep it short and easy.
Thu · 2026-12-24easy
Easy run
1h 50m · ~15.2 km
Effort: Easy
Conversational aerobic running. Keep easy days easy enough to support the key work.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session B: step-downs (slow 3–4s), lunges/sit-to-stand, soleus raises, carries (backpack), dead bug. Quality reps; stop well before failure. Keep the slow step-downs at least a day away from a long run; if this session falls the day before or after one, swap them for core work. In peak weeks, keep it short and easy.
Sat · 2026-12-26long
Long run
2h 00m · 450 m vert · ~13.6 km
Effort: Easy
Build relaxed time on feet at conversational effort. Practise the fuel, hydration and kit you intend to use; treat amounts as rehearsal, not a universal prescription.
Start with 10 minutes easy on rolling terrain. Then 6 x 20 seconds uphill strides, strong but relaxed, walking back down between them. Finish with at least 10 minutes easy; the rest of the run is easy on the hills.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session A: Bulgarian split squat, single-leg RDL, step-ups (bench/stairs), calf raises, side plank. Quality reps; stop well before failure. If 10 reps feels easy, add weight (backpack/water) so the last 2 reps feel challenging. In peak weeks, keep it short and easy.
Thu · 2026-12-31easy
Easy run
1h 55m · ~15.9 km
Effort: Easy
Conversational aerobic running. Keep easy days easy enough to support the key work.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session B: step-downs (slow 3–4s), lunges/sit-to-stand, soleus raises, carries (backpack), dead bug. Quality reps; stop well before failure. Keep the slow step-downs at least a day away from a long run; if this session falls the day before or after one, swap them for core work. In peak weeks, keep it short and easy.
Sat · 2027-01-02long
Long run
2h 10m · 525 m vert · ~14.5 km
Effort: Easy
Build relaxed time on feet at conversational effort. Practise the fuel, hydration and kit you intend to use; treat amounts as rehearsal, not a universal prescription.
Start with 10 minutes easy on rolling terrain. Then 6 x 20 seconds uphill strides, strong but relaxed, walking back down between them. Finish with at least 10 minutes easy; the rest of the run is easy on the hills.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session A: Bulgarian split squat, single-leg RDL, step-ups (bench/stairs), calf raises, side plank. Quality reps; stop well before failure. If 10 reps feels easy, add weight (backpack/water) so the last 2 reps feel challenging. In peak weeks, keep it short and easy.
Thu · 2027-01-07easy
Easy run
2h 00m · ~16.6 km
Effort: Easy
Conversational aerobic running. Keep easy days easy enough to support the key work.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session B: step-downs (slow 3–4s), lunges/sit-to-stand, soleus raises, carries (backpack), dead bug. Quality reps; stop well before failure. Keep the slow step-downs at least a day away from a long run; if this session falls the day before or after one, swap them for core work. In peak weeks, keep it short and easy.
Sat · 2027-01-09long
Long run
2h 15m · 600 m vert · ~14.7 km
Effort: Easy
Build relaxed time on feet at conversational effort. Practise the fuel, hydration and kit you intend to use; treat amounts as rehearsal, not a universal prescription.
Start with 10 minutes easy. Then 6 x 20 seconds relaxed strides, with 1 minute easy between repeats. Finish with at least 10 minutes easy; any remaining time is easy.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session A: Bulgarian split squat, single-leg RDL, step-ups (bench/stairs), calf raises, side plank. Quality reps; stop well before failure. If 10 reps feels easy, add weight (backpack/water) so the last 2 reps feel challenging. In peak weeks, keep it short and easy.
Thu · 2027-01-14easy
Easy run
1h 25m · ~11.8 km
Effort: Easy
Conversational aerobic running. Keep easy days easy enough to support the key work.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session B: step-downs (slow 3–4s), lunges/sit-to-stand, soleus raises, carries (backpack), dead bug. Quality reps; stop well before failure. Keep the slow step-downs at least a day away from a long run; if this session falls the day before or after one, swap them for core work. In peak weeks, keep it short and easy.
Sat · 2027-01-16long
Long run
1h 40m · 475 m vert · ~10.7 km
Effort: Easy
Build relaxed time on feet at conversational effort. Practise the fuel, hydration and kit you intend to use; treat amounts as rehearsal, not a universal prescription.
Start with 10 minutes easy on rolling terrain. Then 6 x 20 seconds uphill strides, strong but relaxed, walking back down between them. Finish with at least 10 minutes easy; the rest of the run is easy on the hills.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session A: Bulgarian split squat, single-leg RDL, step-ups (bench/stairs), calf raises, side plank. Quality reps; stop well before failure. If 10 reps feels easy, add weight (backpack/water) so the last 2 reps feel challenging. In peak weeks, keep it short and easy.
Thu · 2027-01-21easy
Easy run
2h 00m · ~16.6 km
Effort: Easy
Conversational aerobic running. Keep easy days easy enough to support the key work.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session B: step-downs (slow 3–4s), lunges/sit-to-stand, soleus raises, carries (backpack), dead bug. Quality reps; stop well before failure. Keep the slow step-downs at least a day away from a long run; if this session falls the day before or after one, swap them for core work. In peak weeks, keep it short and easy.
Sat · 2027-01-23long
Long run
2h 25m · 750 m vert · ~15.1 km
Effort: Easy
Build relaxed time on feet at conversational effort. Practise the fuel, hydration and kit you intend to use; treat amounts as rehearsal, not a universal prescription.
Start with 10 minutes easy on rolling terrain. Then 6 x 20 seconds uphill strides, strong but relaxed, walking back down between them. Finish with at least 10 minutes easy; the rest of the run is easy on the hills.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session A: Bulgarian split squat, single-leg RDL, step-ups (bench/stairs), calf raises, side plank. Quality reps; stop well before failure. If 10 reps feels easy, add weight (backpack/water) so the last 2 reps feel challenging. In peak weeks, keep it short and easy.
Thu · 2027-01-28easy
Easy run
2h 20m · ~19.4 km
Effort: Easy
Conversational aerobic running. Keep easy days easy enough to support the key work.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session B: step-downs (slow 3–4s), lunges/sit-to-stand, soleus raises, carries (backpack), dead bug. Quality reps; stop well before failure. Keep the slow step-downs at least a day away from a long run; if this session falls the day before or after one, swap them for core work. In peak weeks, keep it short and easy.
Sat · 2027-01-30long
Long run
2h 40m · 825 m vert · ~16.6 km
Effort: Easy
Build relaxed time on feet at conversational effort. Rehearse race fuelling: about 40 to 80 g of carbohydrate an hour from early on, 400 to 800 ml of fluid an hour depending on heat and sweat, and sodium with it (about 300 to 600 mg an hour). Use what you will carry on race day and adjust to your stomach.
Start with 10 minutes easy. Then 4 x 5 minutes uphill at a strong, sustainable effort, with 2 minutes easy between repeats. Finish with at least 10 minutes easy; any remaining time is easy.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session A: Bulgarian split squat, single-leg RDL, step-ups (bench/stairs), calf raises, side plank. Quality reps; stop well before failure. If 10 reps feels easy, add weight (backpack/water) so the last 2 reps feel challenging. In peak weeks, keep it short and easy.
Thu · 2027-02-04easy
Easy run
2h 05m · ~17.3 km
Effort: Easy
Conversational aerobic running. Keep easy days easy enough to support the key work.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session B: step-downs (slow 3–4s), lunges/sit-to-stand, soleus raises, carries (backpack), dead bug. Quality reps; stop well before failure. Keep the slow step-downs at least a day away from a long run; if this session falls the day before or after one, swap them for core work. In peak weeks, keep it short and easy.
Sat · 2027-02-06long
Long run
2h 45m · 900 m vert · ~16.8 km
Effort: Easy
Build relaxed time on feet at conversational effort. Rehearse race fuelling: about 40 to 80 g of carbohydrate an hour from early on, 400 to 800 ml of fluid an hour depending on heat and sweat, and sodium with it (about 300 to 600 mg an hour). Use what you will carry on race day and adjust to your stomach.
Start with 10 minutes easy. Then 6 x 20 seconds relaxed strides, with 1 minute easy between repeats. Finish with at least 10 minutes easy; any remaining time is easy.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session A: Bulgarian split squat, single-leg RDL, step-ups (bench/stairs), calf raises, side plank. Quality reps; stop well before failure. If 10 reps feels easy, add weight (backpack/water) so the last 2 reps feel challenging. In peak weeks, keep it short and easy.
Thu · 2027-02-11easy
Easy run
1h 45m · ~14.5 km
Effort: Easy
Conversational aerobic running. Keep easy days easy enough to support the key work.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session B: step-downs (slow 3–4s), lunges/sit-to-stand, soleus raises, carries (backpack), dead bug. Quality reps; stop well before failure. Keep the slow step-downs at least a day away from a long run; if this session falls the day before or after one, swap them for core work. In peak weeks, keep it short and easy.
Sat · 2027-02-13long
Long run
2h 00m · 700 m vert · ~11.9 km
Effort: Easy
Build relaxed time on feet at conversational effort. Practise the fuel, hydration and kit you intend to use; treat amounts as rehearsal, not a universal prescription.
Start with 10 minutes easy. Then 4 x 6 minutes uphill at a strong, sustainable effort, with 2 minutes easy between repeats. Finish with at least 10 minutes easy; any remaining time is easy.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session A: Bulgarian split squat, single-leg RDL, step-ups (bench/stairs), calf raises, side plank. Quality reps; stop well before failure. If 10 reps feels easy, add weight (backpack/water) so the last 2 reps feel challenging. In peak weeks, keep it short and easy.
Thu · 2027-02-18easy
Easy run
2h 10m · ~18 km
Effort: Easy
Conversational aerobic running. Keep easy days easy enough to support the key work.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session B: step-downs (slow 3–4s), lunges/sit-to-stand, soleus raises, carries (backpack), dead bug. Quality reps; stop well before failure. Keep the slow step-downs at least a day away from a long run; if this session falls the day before or after one, swap them for core work. In peak weeks, keep it short and easy.
Sat · 2027-02-20long
Long run
2h 55m · 1,025 m vert · ~17.4 km
Effort: Easy
Build relaxed time on feet at conversational effort. Rehearse race fuelling: about 40 to 80 g of carbohydrate an hour from early on, 400 to 800 ml of fluid an hour depending on heat and sweat, and sodium with it (about 300 to 600 mg an hour). Use what you will carry on race day and adjust to your stomach.
Start with 10 minutes easy. Then 4 x 7 minutes uphill at a strong, sustainable effort, with 2 minutes easy between repeats. Finish with at least 10 minutes easy; any remaining time is easy.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session A: Bulgarian split squat, single-leg RDL, step-ups (bench/stairs), calf raises, side plank. Quality reps; stop well before failure. If 10 reps feels easy, add weight (backpack/water) so the last 2 reps feel challenging. In peak weeks, keep it short and easy.
Thu · 2027-02-25easy
Easy run
2h 20m · ~19.4 km
Effort: Easy
Conversational aerobic running. Keep easy days easy enough to support the key work.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session B: step-downs (slow 3–4s), lunges/sit-to-stand, soleus raises, carries (backpack), dead bug. Quality reps; stop well before failure. Keep the slow step-downs at least a day away from a long run; if this session falls the day before or after one, swap them for core work. In peak weeks, keep it short and easy.
Sat · 2027-02-27long
Long run
3h 10m · 1,100 m vert · ~19 km
Effort: Easy
Build relaxed time on feet at conversational effort. Rehearse race fuelling: about 40 to 80 g of carbohydrate an hour from early on, 400 to 800 ml of fluid an hour depending on heat and sweat, and sodium with it (about 300 to 600 mg an hour). Use what you will carry on race day and adjust to your stomach.
Start with 10 minutes easy. Then 3 x 14 minutes on familiar, controllable terrain at a steady to controlled-hard effort, descending under control for about 8 minutes between climbs. Finish with at least 10 minutes easy; any remaining time is easy.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session A: Bulgarian split squat, single-leg RDL, step-ups (bench/stairs), calf raises, side plank. Quality reps; stop well before failure. If 10 reps feels easy, add weight (backpack/water) so the last 2 reps feel challenging. In peak weeks, keep it short and easy.
Thu · 2027-03-04easy
Easy run
2h 30m · ~20.8 km
Effort: Easy
Conversational aerobic running. Keep easy days easy enough to support the key work.
Use race-like terrain where practical, but keep the overall effort controlled. Rehearse race fuelling: about 40 to 80 g of carbohydrate an hour from early on, 400 to 800 ml of fluid an hour depending on heat and sweat, and sodium with it (about 300 to 600 mg an hour). Use what you will carry on race day and adjust to your stomach.
Start with 10 minutes easy. Then 6 x 20 seconds relaxed strides, with 1 minute easy between repeats. Finish with at least 10 minutes easy; any remaining time is easy.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session A: Bulgarian split squat, single-leg RDL, step-ups (bench/stairs), calf raises, side plank. Quality reps; stop well before failure. If 10 reps feels easy, add weight (backpack/water) so the last 2 reps feel challenging. In peak weeks, keep it short and easy.
Thu · 2027-03-11easy
Easy run
2h 00m · ~16.6 km
Effort: Easy
Conversational aerobic running. Keep easy days easy enough to support the key work.
Use race-like terrain where practical, but keep the overall effort controlled. Practise the fuel, hydration and kit you intend to use; treat amounts as rehearsal, not a universal prescription.
Start with 10 minutes easy. Then 3 x 15 minutes on familiar, controllable terrain at a steady to controlled-hard effort, descending under control for about 8 minutes between climbs. Finish with at least 10 minutes easy; any remaining time is easy.
Effort: Moderate: controlled reps, stop 1–2 short of failure
No-gym Session A: Bulgarian split squat, single-leg RDL, step-ups (bench/stairs), calf raises, side plank. Quality reps; stop well before failure. If 10 reps feels easy, add weight (backpack/water) so the last 2 reps feel challenging. In peak weeks, keep it short and easy.
Thu · 2027-03-18easy
Easy run
2h 40m · ~22.1 km
Effort: Easy
Conversational aerobic running. Keep easy days easy enough to support the key work.
Use race-like terrain where practical, but keep the overall effort controlled. Rehearse race fuelling: about 40 to 80 g of carbohydrate an hour from early on, 400 to 800 ml of fluid an hour depending on heat and sweat, and sodium with it (about 300 to 600 mg an hour). Use what you will carry on race day and adjust to your stomach.
Start with 10 minutes easy. Then 5 x 3 minutes at a strong, sustainable uphill effort, walking back down between them. Finish with at least 10 minutes easy; any remaining time is easy.
Keep this comfortable and finish with plenty in reserve. Practise the fuel, hydration and kit you intend to use; treat amounts as rehearsal, not a universal prescription.
Start with 10 minutes easy. Then 5 x 3 minutes at a strong, sustainable uphill effort, walking back down between them. Finish with at least 10 minutes easy; any remaining time is easy.
Keep this comfortable and finish with plenty in reserve. Practise the fuel, hydration and kit you intend to use; treat amounts as rehearsal, not a universal prescription.
Race Day: Hiroshima Ultra-Trail by UTMB HIROSHIMA 50K
Effort: Race execution
Run the 49 km as planned: start controlled and use the fuelling and kit rehearsed in training. Fuelling: about 40 to 80 g of carbohydrate an hour from early on, 400 to 800 ml of fluid an hour depending on heat and sweat, and sodium with it (about 300 to 600 mg an hour). Use what you will carry on race day and adjust to your stomach. Afterwards: rest or walk for several days, then short easy runs only, with no hard running for three to four weeks, longer after a long mountain day.
Sun · 2027-04-11recovery
Post-race recovery
Effort: Rest or very easy
Prioritize rest, food, fluids and gentle movement; do not schedule a workout by default.
Cutoff check
If your race has a time limit, this estimates the minimum average pace and whether your
target finish time clears the cutoff.
Result
Min pace: 16.5 min/km
Exports
Use the personal subscription URL for a live saved plan. Calendar links regenerate from their parameters and may reflect updated race facts or engine fixes. A kept plan and its downloads remain unchanged.
Disclaimer: this plan is general information, not medical advice. Adjust based on fatigue,
experience, and injury history.
About the Hiroshima Ultra-Trail by UTMB HIROSHIMA 50K course
At 49 km with 2,800 m of climbing, this distance challenges both endurance and climbing ability without the time-management demands of a full ultra. At 57 m of vertical per kilometer, much of the course is runnable — the plan focuses on building your aerobic cruising speed while preparing you for the steeper sections. The official cutoff is 13.5 hours, so pace management starts from week one.
This training plan adapts the 16-week structure specifically for 49 km with 2,800 m of elevation gain,
scaling weekly volume and vert targets so your body is ready for race-day demands.
This distance sits at the boundary between endurance and speed — long enough to require serious aerobic preparation, but short enough that pace efficiency and descending technique make a real difference.
The plan builds weekly volume progressively while including hill-specific sessions to sharpen climbing and descending rhythm.
Training phases for HIROSHIMA 50K
The current 16-week schedule has these phases for 49 km and 2,800 m of climbing:
Weeks 1–6 — Base Building: Establish consistent aerobic training and introduce course-like terrain gradually.
Weeks 7–10 — Vert Accumulation: Increase course-specific climbing while rehearsing easy effort and fueling.
Weeks 11–13 — Peak Volume: Practise the longest planned outings and race equipment without adding extra sessions.
Weeks 14–15 — Taper: Reduce training load while retaining a small amount of familiar intensity.
Week 16 — Race week: Reduce training and follow the race-day plan.
Pacing a runnable course
At 57 m of vertical per kilometer, much of the Hiroshima Ultra-Trail by UTMB HIROSHIMA 50K course is runnable.
Training should emphasise aerobic cruising speed — tempo runs on rolling terrain, sustained effort on moderate climbs, and efficient flat-to-uphill transitions.
The biggest risk on a runnable course is starting too fast; practice negative-split long runs to build discipline.