12th Santa Claus Half Marathon & 20th Santa Claus Street Races

Mikołajki hosts a winter half marathon and 10 km street race on 5 December 2026, with children's and youth races earlier the same morning. Number pick-up and on-the-day registration run from 08:00 to 11:00, the half marathon starts at 11:45 and entries are capped at 450 runners.