Ultra Running Hub Gasselte, Netherlands · Saturday, October 10, 2026
Indian Summer Ultra 100 km
Calculated from 100 km alone — the organiser has not published an elevation profile. Read 5.0 as a floor, not a verdict.
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, October
Regional 2001-2020 average for October — NASA POWER, grid elevation 5 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2025 | 100km | 92 | Niels Grote Beverborg · 08:58:44 | Miriam Saschowa · 11:03:39 |
| 2024 | 100km | 94 | Paul Musegaas · 08:38:30 | Daniela Tucan · 11:40:39 |
| 2023 | 100km | 132 | Martijn Klaasse · 08:07:59 | Mascha Rondhuis · 10:05:15 |
| 2022 | 100km | 76 | Richard Moesker · 09:31:04 | Eline Cox · 09:52:04 |
| 2021 | 87km | 49 | Henry Tol · 08:46:44 | Bertine Grootemarsink · 09:58:27 |
| 2019 | 87km | 38 | Andreas Aldekamp · 08:20:00 | Sandra Medendorp · 09:32:00 |
| 2018 | 102.9km | 32 | Martijn Klaasse · 08:28:53 | Bertine de Vries · 09:15:25 |
| 2017 | 102.9km | 29 | Nikola Soljaga · 10:26:59 | Jannet Lange · 13:06:19 |
| 2016 | 102km | 28 | Albert Pieter Venema · 10:51:59 | Petra Bilthof · 11:44:51 |
The field has held steady: 94 in 2024, 92 in 2025. 13% 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.
The Aid Station
Course-specific beta from the community
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.
Gear for this race
Chosen for 100 km of trail.
- 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 14 h limit puts you out there after dark.
- Accessories Chafe and blisters end more 100 km races than fitness does.
Overview
The Indian Summer Ultra 100 km, organised by adamandevents.eu, offers a 100 km trail race in Gasselte, Netherlands. With 9 editions since 2016, the latest in 2025 saw 92 finishers. The entry fee ranges from 50 to 70€.
The course is almost entirely trail, with a few percent paved, and has no significant elevation. A 14-hour time limit means a pace tighter than 75% of 100k races, requiring runners to maintain a pace faster than 8.4 minutes per kilometer. This event draws a larger field than 73% of its 313 peer 100k races.
Similar races
Other 100K trail ultras, closest in distance first.