Alte Konstanzerstrasse

MODERATE (2/10)

Sonnenhalde → Oberloch

Distance
12.2 km
Ascent
+499 m
Descent
-211 m
Est. Time
4h 04m
Altitude
482.6–804 m
Type
point-to-point
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Alte Konstanzerstrasse is a 12.2 km point-to-point moderate hiking route in Switzerland, running from Sonnenhalde to Oberloch. The route covers 499m of ascent and 211m of descent, with elevations ranging from 482m to 804m. Allow approximately 4h 04m for the full route.

With 93% of the route below 15% gradient, strong trail runners can maintain a good rhythm for much of the distance. Some pitches hit 46% gradient, so trekking poles are strongly recommended.

Budget roughly 1,995 kcal of energy expenditure and 2.4 L of water.

Low-altitude route (max 804m). Hikeable most of the year.

Elevation Profile

500m550m600m650m700m750m800m0 km2 km4 km6 km8 km10 km12 km804m483m
Flat (<5%) Easy (5–10%) Moderate (10–15%) Steep (15–25%) Very Steep (>25%)

Route Map

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Segment Breakdown

Auto-analyzed from the elevation profile. Each segment shows the dominant character for planning your effort.

SegmentDist↑ / ↓TimeCharacter
Sonnenhalde → km 9.3 (804m)
483–804m
9.3 km+376m / -55m2h 30m📈 Climbing
km 9.3 (804m) → Oberloch
665–804m
2.9 km+108m / -141m50 min🥾 Rolling Terrain
Total12.2 km+499m / -211m3h 21m

Pace & Fuel Calculator

Adjust your flat 10K pace to see personalized finish time, calorie burn, and hydration needs.

7:00 /km
4:00 /km (elite) 12:00 /km (leisure)
Fast Hiker / Jogger
Est. Finish Time
2h 08m
Calories
1,617 kcal
Water Needed
1.9 L
Effort Distance
18.3 km
flat-equivalent
🍫 Recommended: ~45g carbs/hr (96g total) 🧂 Electrolytes: ~1071mg sodium/hr

Terrain Analysis

Runnability
93%
Very Runnable
% of route below 15% gradient
Climb Ratio
41 m/km
Steep profile
↑ 499m ↓ 211m
High Point
804 m
Mountain zone
Low point: 482.6m — Range: 321.4m

Surface & Technicality

Terrain Difficulty Breakdown
Runnable Flat (61%) Easy Grade (25%) Moderate Climb (8%) Steep (4%) Very Steep / Technical (2%)

🏃 Mostly runnable with gentle terrain. Great for fast trail running.

Sun Exposure

🌲 Well Shaded 20% exposed · 80% shaded
Route shade profile
Forest/shaded (80%) Open terrain (20%)
South-facing: 86% of route — receives maximum afternoon sun

🌲 Mostly shaded route. Good tree cover at lower elevations. Less sun exposure risk, but still carry sun protection for any exposed ridge sections.

Current Conditions

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Conditions for June

✅ In season — good conditions expected
Snow Risk
0%
Unlikely
69% north-facing slopes
Mud Risk
15%
Low
Ice Risk
0%
Unlikely

✅ Snow unlikely at this elevation in June. Trail conditions expected to be clear.

Best months: April, May, June, July, August, September, October, November

Snow Conditions

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Suggested Gear List

Auto-generated based on 12.2 km, 499m ascent, max altitude 804m, ~4h duration.

Essential 4 items
  • 👟
    Trail running shoes / hiking boots
    Required for any trail
  • 📱
    Phone (charged) + offline map
    Navigation & emergency contact
  • 💧
    2L hydration pack
    No water sources on route
  • 🍫
    Trail mix, bars & sandwich
    Est. 1995 kcal burn
Recommended 4 items
  • 🧴
    Sunscreen
    Basic sun protection
  • 🧥
    Light rain jacket
    Weather changes fast in the mountains
  • 🩹
    Mini first aid kit
    Blister plasters, tape, antiseptic
  • 🧊
    Microspikes / light crampons
    Snow risk in December, January, February
Nice to have 1 items
  • 🦵
    Gaiters
    Keep snow out of boots

Logistics

This route runs from Sonnenhalde to Oberloch (12.2 km by trail). You'll need to arrange transport back to your starting point.

Start — Getting There
Sonnenhalde
No transit stops detected nearby.
Finish — Getting Back
Oberloch
No transit stops detected nearby. Check local timetables.
🗺️ Transit directions (Google)

Nearby Points of Interest

📍 Nearby Places

  • Sonnenbüel km 0.7 · 690m off trail
  • Chatzensteig km 0.7 · 928m off trail
  • Chesswil km 1.5 · 1.4 km off trail
  • Karlshusen km 1.7 · 1.5 km off trail
  • Bueholz km 1.5 · 1.6 km off trail

Route Details

Network
Regional Trail Network
Sport
hiking
Start
Sonnenhalde
End
Oberloch
Start Coordinates
47.52182, 9.31289
OpenStreetMap
View on OSM →

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