Ultra Running Hub Calw-Altburg, Germany · Saturday, July 10, 2027
e2h10k-100km
What the course asks
DUV results for the 2025 edition (100km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, July
Regional 2001-2025 average for July — NASA POWER, grid elevation 556 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2025 | 100km | 5 | Rafael Golis · 14:02:00 | — |
| 2023 | 100km | 10 | Marco Möhler · 10:02:00 | — |
| 2022 | 100km | 12 | Marco Möhler · 08:55:00 | Peijin Gong · 12:10:00 |
| 2021 | 100km | 14 | Sascha Lorenz · 09:35:06 | Bettina Wissmeier-Huber · 14:20:55 |
| 2021 | 100km | 7 | Ramin Madani · 12:10:29 | Nina Pauschert · 14:44:34 |
| 2020 | 100km | 9 | Sascha Lorenz · 19:04:30 | Pia Winkelblech · 19:22:55 |
The field shrank 50% between 2023 (10) and 2025 (5). 0% of the 2025 field were women.
DUV results for the 2025 edition (100km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Course notes
- terrain This is a fast & flat course. Expect fast, runnable sections where rhythm is key.
- gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.
- nutrition For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.
Gear for this race
Chosen for 100 km of trail with 370 m of ascent.
- Trail Running Shoes 100 km of trail — cushioning that is still there in the last quarter.
- Race Nutrition Past 100 km the palate quits before the legs do — carry more than one flavour.
- Hydration Vests Flask capacity for 100 km, without the bounce.
- Headlamps A 20 h limit puts you out there after dark.
- Accessories Chafe and blisters end more 100 km races than fitness does.
Overview
Held in Germany in July, the e2h10k-100km combines a fixed 100-kilometer distance with a distinct interval structure: runners complete 10 loops of 10 kilometers, with a new lap starting every 2 hours and any remaining time serving as a break. With 370 meters of total elevation gain—averaging just 3.7 meters of climb per kilometer across trails and forest paths—the terrain is exceptionally flat for an ultra.
The 20-hour time limit demands an overall pace of 12 minutes per kilometer, making the cut-off more generous than 71% of 100k races and tighter than 29%. That forgiving cushion affords runners room to manage the recurring restarts without facing severe clock pressure.
It remains an intimate event, smaller than 90% of 100k fields and bigger than 8%, ending with 5 finishers in 2025. Between the unusual schedule, entry fees of 40 to 50, and 6 past editions since 2020, participants experience a paced, small-scale challenge rather than a crowded mass start.
Similar races
Other 100K trail ultras, closest in distance first.