Inferno Halbmarathon
About This Race
One of the hardest half marathon mountain runs in the Alps. The Inferno Halbmarathon climbs from Lauterbrunnen valley (800m) to the summit of Schilthorn (2970m) - over 2,175 meters of elevation gain in 21 kilometers. Part of the legendary Inferno Triathlon weekend.
The Course
Steep mountain trails with extreme vertical gain, mix of trails and alpine paths
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Race Details
Terrain
Trail
Elevation
Mountain
2175 gain
Participants
800 participants
Distances
Half Marathon, Relay
What to Expect
An extreme vertical challenge through the iconic Lauterbrunnen valley with stunning views of the Eiger, Mönch, and Jungfrau. Runners tackle relentless climbing with minimal flat sections. Also available as a relay (staffellauf).
Highlights
Race Information
Start Time
10:00
Cutoff Time
6 hours
Typical Weather
Variable alpine weather in mid-August, 8-18°C, possible rain or fog at altitude
Tags
Frequently Asked Questions
Quick Info
- August 15, 2026
- Lauterbrunnen · Switzerland
- Trail course
- Mountain elevation
- 800 participants
Verified event information
- Last verified 10 days ago
- Data sourced from official website