Sinister 7 Ultra 2025

The 100-mile, 50-mile, and 50K courses traverse some of the most rugged, remote, and breathtaking terrain in Alberta’s Rocky Mountains. The 100-mile event welcomes solo runners or teams of up to seven, while the 50-mile and 50K races are for solo participants only. New as of 2023, a Kids Race has been added to the lineup. Participants have 30 hours to conquer the 100-mile course, 24 hours for the 50-mile, and 13.5 hours for the 50K, offering a challenging yet rewarding experience for all.