The Lumberjack 100 is a mountain bike race held in Michigan’s Manistee National Forest and the Big-M Ski Area. The course features predominantly hard pack single track with sandy sections and fast, twisting terrain that requires sustained effort and focus. Riders experience significant elevation gain throughout the event. Participants range from elite competitors to those aiming to complete the challenging course. The event includes a post-race meal, refreshments from Blackrocks Brewery, and awards for participants.