Sinister 7 Ultra

Sinister 7 Ultra : Blairmore, Alberta (July 11, 2026)

Sinister 7 Ultra is a trail running event in Blairmore, Alberta, Canada, taking place on July 11, 2026. The event offers multiple race distances and a kids race. The course is made of seven stages, each highlighting geographic or historic features of the area. The event name refers to the Seven Sisters Mountain that overlooks much of the course.

• 100-mile
• 50-mile
• 50k
• Half Marathon
• Relay
• Kids Race

Race format and logistics

The race is open to solo runners or teams of up to seven. Racers have a 30-hour limit to complete the event. Distance composition is specified: the 50-mile covers half of leg 4 plus legs 5 through 7; the 50k covers half of leg 1, half of leg 2, and leg 3; the Half Marathon covers half of leg 1 and half of leg 2. Relay teams must start with at least two teammates; teammates can be added after initial registration and an access code option can limit who may join a team.

Registration fees vary by distance and by registration period (early, regular, 11th hour). The event weekend includes pre-race check-in and meetings, race starts, course closures, awards, and post-race meals. Listed sponsors include Merrell, Sun River Honey, Fenix, Fast Trax, and Tailwind. Visit the organization's website for the most recent information.