Bison Ultra-Trail prepares for upcoming race in Poland

The Bison Ultra-Trail event in Supraśl, Poland, is entering its final preparation stages. This year's edition has seen a nearly 20 percent increase in participation compared to last year, with significant growth in interest for the longest distances, including the 70 km and 100 km races.

Organizers have finalized the routes, which include a new 10 km distance and modified paths for the 18 km and 30 km to 100 km segments due to environmental restrictions near the Krzemienne Góry reserve. Most distances are nearing capacity, with only 20 to 40 spots remaining for several categories, while the 10 km race is already fully booked.

Merrell will serve as the technical sponsor for the event, which takes place on October 2–3, 2026. The brand will host a testing zone at the expo where participants can freey borrow the Agility Peak 6 trail running shoes to test them on the diverse terrain of the Knyszyńska Forest.