Ultra Running Hub Oybin, Germany · Saturday, October 16, 2027
Fixed Distance 50K
O-SEE Ultra Trail 50km
395 days away
50 km Distance
2,340 m Climbing
6.0 Grit · Hardcore
What the course asks
Climbing rate 47 m / km
Mountain. Significant climbing. Steep sections will require power hiking.
Time limit 10 hours
12:00 min/km average. Generous. Walkable throughout for most of the field. About average for a 50K. Measured against 1007 races of the same distance. Cut-off calculator →
Field size ~166 Mid-sized. Company early, well spread out by halfway.
DUV results for the 2025 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, October
Daytime high 13°C
Night low 4°C
Rainfall Mostly dry
Daylight 10 h 45 m of light
Regional 2001-2020 average for October — NASA POWER, grid elevation 327 m. Not a forecast.
The Aid Station
Course-specific beta from the community
This is a mountain course. Poles are highly recommended for the sustained climbs.
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 50 km of trail with 2,340 m of ascent.
- Trail Running Shoes47 m of climb per kilometre — grip and rock protection before cushioning.
- Race Nutrition50 km of self-supported fuelling between aid stations.
- Hydration VestsPole attachment and chest-strap stability on steep ground.
- Trekking Poles2,340 m of ascent to walk up.
- GPS WatchesBattery life first — a 50 km day outlasts most full-GPS modes.
Course Notes
Start & Ziel: Kurpark – An der Bürgerallee, 02797 Oybin. Bergig, überwiegend Pfade, teils entlang der tschechischen Grenze.
Similar races
Other 50K trail ultras, closest in distance first.