Otzberg, Germany · Thursday, December 31, 2026

Fixed Distance Marathon

Otzberger Silvester-Ultra

74 days away
45 km Distance
400 m Climbing
2.9 Grit · Entry level
49.8304° N, 8.9101° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 9 m / km Fast & Flat. This course is relatively flat and fast. Ideal for PB attempts.
Time limit 8 hours 10:40 min/km average. Firm. Room to walk the climbs and stop at aid. Tighter than 74% of Marathon races. Measured against 46 races of the same distance. Cut-off calculator →
Field size ~36 Small. Long stretches with nobody in sight.

DUV results for the 2025 edition (45km) — 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 4°C
Night low -1°C
Rainfall Mostly dry
Daylight 8 h 10 m of light

Regional 2001-2020 average for December — NASA POWER, grid elevation 172 m. Not a forecast.

Results history

Year Race Finishers Men's winner Women's winner
2025 45km 36 Rene Strosny · 03:42:28 Sabine Beck · 04:02:14
2024 45km 30 Björn Appel · 04:10:27 Gundula Weckenmann · 04:40:06

The field grew 20% between 2024 (30) and 2025 (36). 31% of the 2025 field were women.

DUV results for the 2025 edition (45km) — 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.

Gear for this race

Chosen for 45 km of trail with 400 m of ascent.

  • Trail Running Shoes 45 km of trail — cushioning that is still there in the last quarter.
  • Race Nutrition 45 km of self-supported fuelling between aid stations.
  • Hydration Vests Flask capacity for 45 km, without the bounce.
  • GPS Watches Battery life first — a 45 km day outlasts most full-GPS modes.
All gear guides →

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