Ultra Running Hub Suprasl, Poland · Saturday, October 3, 2026
Fixed Distance 50 mi
Bison Ultra-Trail 70
17 days to go
70 km Distance
600 m Climbing
4.4 Grit · Challenging
What the course asks
Climbing rate 9 m / km
Fast & Flat. This course is relatively flat and fast. Ideal for PB attempts.
Time limit 11 hours
9:26 min/km average. Comfortable. Room to walk the climbs and stop at aid. Tighter than 81% of 50 mi races. Measured against 455 races of the same distance. Cut-off calculator →
Field size ~96 Mid-sized. Company early, well spread out by halfway.
DUV results for the 2025 edition (70km) — 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 11°C
Night low 3°C
Rainfall Mostly dry
Daylight 11 h 32 m of light
Regional 2001-2020 average for October — NASA POWER, grid elevation 142 m. Not a forecast.
The Aid Station
Course-specific beta from the community
This is a fast & flat course. Expect fast, runnable sections where rhythm is key.
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 70 km of trail with 600 m of ascent.
- Trail Running Shoes70 km of trail — cushioning that is still there in the last quarter.
- Race Nutrition70 km of self-supported fuelling between aid stations.
- Hydration VestsFlask capacity for 70 km, without the bounce.
- GPS WatchesBattery life first — a 70 km day outlasts most full-GPS modes.
Similar races
Other 50 mi trail ultras, closest in distance first.