Running
Gempen 100
100 km
2,280m
Gempen Grinder
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Road runs in Switzerland, Basel
Distances
Running
Gempen 50
50 km
Running
Gempen 40
40 km
About
Three days of gravel, music, and community in the Jura mountains — ride your pace and stay for the full weekend at Switzerland's best-kept gravel secret.
Catering & aid stations
Feed zones: one on the 50 km, two on the 100 km with water, electrolytes, and real food (bananas, bars, salty snacks).
Pacers
No pacer details found on the crawled pages.
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Surface mix
- 100% asphalt
Typical weather in Basel
Monthly averages based on historical data (2000–present).
Jan6°-1°
↑ 08:14
↓ 17:05
Feb8°-1°
↑ 07:38
↓ 17:52
Mar12°2°
↑ 06:43
↓ 18:36
Apr16°5°
↑ 06:41
↓ 20:19
May19°9°
↑ 05:53
↓ 21:01
Jun24°14°
↑ 05:32
↓ 21:30
Jul25°15°
↑ 05:48
↓ 21:24
Aug25°15°
↑ 06:27
↓ 20:43
Sep21°11°
↑ 07:08
↓ 19:43
Oct16°8°
↑ 07:49
↓ 18:43
Nov10°3°
↑ 07:36
↓ 16:55
Dec6°0°
↑ 08:12
↓ 16:40
What's included in entry
- Gempen 50 km
- Gempen 100 km
- Gempen 40 km social ride
- Gravel Omnium access
FAQ
What are the distance options and formats?
40 km social ride (Gempen 40), 50 km race (Gempen 50), 100 km race (Gempen 100), and a Gravel Omnium with multiple short laps at the Graveldrome on Friday night.
Is the event self-supported?
Yes — the 50 km and 100 km are self-supported with on-course feed zones; the 40 km social ride has no timing and no drop-bag service. No outside feeding on course.
What timing and tracking is provided?
Electronic chip timing and live splits for the 50 km and 100 km. The Social Ride is untimed. Live tracking and checkpoints are available.
What is the Graveldrome?
The Graveldrome is the Omnium stage, emotional finish zone, and social center of the weekend. It sits inside an old horse-track oval with camping close by; it hosts Friday night Omnium races and the finish for 50/100 km.
Are there support options for riders?
Yes — a mechanic from Voyage Cycling Store will be on-site with spare parts and quick fixes, and there is moto support on course.
Last updated: Jun 6, 2026, 12:08:30 AM
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