Bieg do Nocy w Siedleczku 2026

Bieg do Nocy is a summer running race in Siedleczko, part of the Kostrzyn Commune Running Grand Prix. The name translates to “Run into the Night,” and the event is part of a local race series, not a standalone city marathon or road classic. The race attracts a few hundred runners, with approximately 150 starters in its second edition and around 250 in its fifth. Local media describe it as one of the most atmospheric races in the Grand Prix, aligning with the night-running concept and giving this Siedleczko event its distinct character within the commune series.