Trail ultramarathon · USA
31 Oct – 1 Nov 2026 · McDowell Mountain Regional Park, Arizona
A looped Sonoran Desert ultra built around an unusually social race village: 100 miles, 100 km, and a night 31 km on rolling single-track north of Fountain Hills.
Entry · 100M · 2026 edition
The organizer listed 100M with a waiting list on 30 Sep 2026. A waiting-list place is not a confirmed entry.
From the organizer's page, checked 30 Sep 2026. TrailSplits does not know whether you have a place; the organizer is the final word.
Javelina Jundred is a trail ultramarathon scheduled for 31 Oct – 1 Nov 2026 in McDowell Mountain Regional Park, Arizona, USA. TrailSplits currently includes 3 mapped courses for this event, with course maps, elevation profiles, weather context, and pacing tools for the uploaded GPX data.
How to get a place: Direct registration on UltraSignup for the 31 October-1 November 2026 edition, now on waitlist; registration closes 1 October 2026. No lottery. Organizer's page, checked Wednesday 30 September 2026.
TrailSplits is a free, independent route & pacing companion — not the official race. Visit the official Javelina Jundred site →
The organizer lists 100M at 160.9 km and +1,919 m for 2026; the course file mapped here measures 158.6 km. Small differences come from how each figure was measured; plans and pacing here use the mapped file. Organizer's race list, checked Wednesday 30 September 2026.
Racing more than once next year? Add 100M to a season and see whether your races work together.
Inspect the official course track on a topographic map, through its elevation profile, or in 3D.
› running direction two lines: out and back on the same path kilometres
Selected distance
Vert-focused blueprint with route-finder links into the Planner.
Other distances
Prepare and return
Keep this course, its training plan, calendar and future course updates together in your private My Races page. Saving does not publish your workouts, pace or progress.
Race route lab
Open the official course in Planner, then choose a nearby start point to build a shorter loop that matches the course demand. This course averages about 11.9 m climb per km.
31 Oct – 1 Nov 2026
Send to your watch
Get the official course as a clean GPX or a Garmin TCX course, with step-by-step instructions to load it onto a Garmin, COROS, Suunto, Wahoo, or Komoot — free, no account needed.
Compare your training
See how faithfully your rehearsal route matches the real race. The official course for 100M loads as Route A — upload your training route to compare distance, elevation gain, estimated time, and how much of the course you actually cover.
Course analysis
See the 100M course broken into its major climbs and descents in order — length, gain, average grade, and steepness — so you know where the crux is and how to pace and fuel it.
Race-week reminders
A free browser notification in the final week — the course crux, the weather window, and loading the GPX onto your watch. No app, no email, no account.
Javelina Jundred 2026 is scheduled for 31 Oct – 1 Nov 2026 in McDowell Mountain Regional Park, Arizona. Check the official race site for registration deadlines and final details.
3 distances (30.6–160.9 km). The longest course is 160.9 km with about 1,919 m of vertical gain — a demanding mountain course.
The 100M course has a 30-hour cut-off, an average of 11.2 min/km to finish in time. TrailSplits' cut-off pacer shows the buffer at each aid station.
Yes. TrailSplits gives you the course map, an interactive elevation profile, a 3D flyover and a downloadable GPX for every mapped distance — free and with no sign-up.
Each distance has a free, course-specific 16-week training plan built around its distance, vertical gain and cut-offs, plus a pace and cut-off calculator.
No. TrailSplits is a free, independent route and pacing companion. For registration and official rules, visit https://www.aravaiparunning.com/javelina/.
Load the GPX directly into TrailSplits for surface analysis and terrain intel.
Install TrailSplits — a free app you add straight from your browser — and download the 100M course to your phone. Explore the route and elevation offline before race day, then follow it with no signal on the day. No app store, no account, no subscription.