100 km
Distance
1,850 m
Elevation Gain
13:45:00
Average Finish Time
280
Total Finishers
1980
Established
Hilly
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Course & Elevation
The Bieler 100km is a challenging out-and-back double-loop course around the Biel region in the Jura foothills, featuring rolling terrain with significant elevation gain spread across the route. Runners traverse scenic rural roads and farmland with views of the Jura mountains, combining moderate climbs with swift descent sections. The course is well-marked and supported with aid stations every 5km.
🌤️ Weather
Early summer in the Jura region brings mild temperatures with occasional rain. Expect changeable conditions with cool mornings warming to comfortable afternoons, typical of Swiss Alpine foothills in June.
🏆 Course Record
07:28:35
Viktor Röthlin (2005)
Registration
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🎯 Fun Facts
- ▸ The Bieler 100km is one of Europe's oldest continuous 100km races, having been organized annually since 1980 without interruption
- ▸ Viktor Röthlin, a Swiss ultramarathon legend, holds the course record set in 2005 and also won the race multiple times during his career
- ▸ The race is part of the historic Swiss ultramarathon circuit and attracts dedicated ultra runners from across Europe seeking to conquer the 100km distance
- ▸ Runners must complete the course within 15 hours, with a cut-off time ensuring support is provided throughout the grueling journey
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