The Marji Gesick Mountain Bike Race is an endurance event held annually in Marquette, Michigan, known for being one of the hardest single-day mountain bike races in the United States.
The race features a challenging course with over 12,000 feet of climbing over 100 miles of singletrack, often described as "the hardest single-day mountain bike race in America" by Jeremiah Bishop. 

It attracts top riders and is part of the National Ultra Endurance Series. 

The event includes various distances, such as the 100-mile and 50-mile races, and is known for its unsupported nature, requiring participants to be well-prepared and self-sufficient. 

The race is held in a remote and wild setting, with a community that supports the event and its participants. 


Marji Gesick - "The hardest single day mountain bike race in America"

All Ages Mountain Biking Race

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