Grizzly Ultra Marathon & Relay 2025

This page is kept as a past race archive for the Oct 11, 2025 edition in Canmore, Alberta. See the 2026 edition when you want the live listing. You can also browse the 2025 race calendar.

The Grizzly Ultra Marathon & Relay is a 50 km trail running event held at the Canmore Nordic Centre Provincial Park in the scenic Rocky Mountains. Participants can run solo or as part of two- or five-person relay teams, enjoying a challenging course divided into five distinct legs of varying difficulty.

The race takes place over two days, October 11 and 12, 2025, with identical events each day allowing participants to choose their preferred date. The event also features a Grizzly Kids Run for children aged 12 and under, promoting family-friendly trail running fun.

• Location: Canmore Nordic Centre Provincial Park
• Distance: 50 km trail run or relay (two- or five-person teams)
• Relay format lets teams divide course into five distinct legs
• Grizzly Kids Run for ages 12 and under with varying distances
• Event dates: October 11 and 12, 2025, participants can choose either day

• Course divided into five legs, each starting and finishing at main stadium
• Total elevation gain of 1,595 meters
• Difficulty ratings from 1 to 5 Claws; Leg 3 (Odyssey) is most challenging
• On-course aid stations with HEED Sports Drink and Hammer Gels
• Mandatory carry of bear spray for participant safety