The Sinister 7 Ultra is a renowned ultramarathon event held annually in the rugged terrain of Crowsnest Pass, Alberta. Named after the iconic Seven Sisters Mountain, the race challenges participants with a demanding course that traverses some of the most scenic and remote landscapes in the Canadian Rockies. Since its inception, the Sinister 7 Ultra has grown in prestige, attracting elite ultrarunners and adventurous teams from across North America and beyond.

The 2026 edition, scheduled for July 11-12, continues the tradition of offering both solo and team relay options, making it accessible to a wide range of endurance athletes. The event is celebrated not only for its physical demands but also for its strong community spirit, well-organized support, and the breathtaking beauty of the Rocky Mountain backdrop. With multiple race distances and a dedicated kids' event, the Sinister 7 Ultra is a highlight of the Canadian trail running calendar.

The Sinister 7 Ultra course is renowned for its challenging and varied terrain. The main 100-mile route is divided into seven distinct stages, each highlighting different geographic and historical features of the Crowsnest Pass region. Runners traverse a mix of double track, single track, high alpine paths, and dirt roads. The course features over 6,600 meters (21,650 feet) of elevation gain, with significant climbs and descents throughout.

Participants encounter technical trails with roots, rocks, water crossings, and mud holes, as well as exposed alpine sections and forested paths. The route is designed to test endurance, navigation, and trail running skills, making it a true ultramarathon challenge. Aid stations are strategically placed to provide hydration and nutrition support, and the course is well-marked for safety.

- Seven-stage, 100-mile course through the Rocky Mountains
- Solo and relay team options (up to seven members per team)
- Multiple race distances: 100-mile, 50-mile, 50k, half marathon, and kids' race
- Over 6,600 meters of elevation gain on the main course
- Scenic and technical trails with diverse terrain
- Well-supported with aid stations and community involvement
- Cash prizes and sponsored awards for top finishers