Poland
The Bison Ultra-Trail will take place in Supraśl on Saturday 4 October 2025. You can run between 12 and 100 kilometers. Visit the organization's website for the most recent information.
Always double-check with the organizer's website – things can change, and we might have sprinted past a few details!
100 km
Bison Ultra-Trail® 100
70 km
Bison Ultra 70
50 km
Bison Ultra 50
30 km
Bison Trail 30
18 km
Bison Trail 18
12 km
Bison Trail 12
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