Ibbenbüren, Germany · Monday, December 28, 2026

Fixed Distance 50K

Dörenther Klippen UltraTrail

89 days away
45.6 km Distance
1,120 m Climbing
4.0 Grit · Challenging
52.2775° N, 7.7151° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 25 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.
Time limit 8 hours 10:32 min/km average. Generous. Walkable throughout for most of the field. Tighter than 73% of 50K races. Measured against 1034 races of the same distance. Cut-off calculator →
Field size ~24 Small. Long stretches with nobody in sight.

DUV results for the 2026 edition (45.6km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, December

Daytime high 5°C
Night low 0°C
Rainfall Mostly dry
Daylight 7 h 43 m of light

Regional 2001-2020 average for December — NASA POWER, grid elevation 38 m. Not a forecast.

Results history

Year Race Finishers Men's winner Women's winner
2026 45.6km 24 Christian Noltemeyer · 04:45:46 Melanie Ruppenthal · 06:32:08
2025 45.6km 19 Klaus Hirle · 04:42:33 Sonja van den Berg · 05:48:16

The field grew 26% between 2025 (19) and 2026 (24). 17% of the 2026 field were women.

DUV results for the 2026 edition (45.6km) — 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

⛰️ terrain

This is a rolling course. Expect fast, runnable sections where rhythm is key.

By UltraHub Expert
👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for 46 km of trail with 1,120 m of ascent.

All gear guides →

Overview

The Dörenther Klippen UltraTrail in Ibbenbüren, Germany, takes place in September. With 1120 meters of elevation gain across 45.6 kilometers, its 24.6 meters of climb per kilometer is concentrated on a demanding route with steep ascents and partly rocky terrain, repeated across four loops of 11.6 kilometers, each gaining 280 meters of elevation.

Runners face a strict time limit: the 8-hour cutoff is tighter than 73% of 50k races, requiring a pace faster than 10.5 minutes per kilometer. The field size of 24 finishers in the latest 2026 edition means it has a smaller field than 37% of 50k races.

Similar races

Other 50K trail ultras, closest in distance first.