Racers will begin at UM at 10 a.m. and must find their way to specific checkpoints throughout the 23-mile race by foot or bike on maintained trails and open terrain.

Participants must register before Friday, April 11, online at http://www.active.com or at Missoula REI, located on Reserve Street in Missoula.

Event includes Kidventure, a treasure hunt-style race for children up to age 12, and an all-day expo featuring local businesses and charities.

Information: Kelley Williams, UM military science department, 406-243-4187, info@grizzlymanrace.com.