The field limit of registrants for the 2012 Butte 100 was reached within the first 10 days that registration was open.
David “Tinker” Juarez will be among the starters, aiming to defend his 100-mile victory.
John Curry took second last year to Juarez and will be looking to take the title.
2010 champion Ben Parsons and 2007 and 2008 champion Bill Martin will also be contesting Juarez in Montana.
The 100-mile loop begins with a 50-mile loop north of I-90 and then joins the 50-mile course.
Organizers predict that this year will have the fastest track in the history of the race, but it will still be ruthless and demanding with 11,460 feet elevation gain in the 50-mile race alone.
Racers will pass through dense forest to the Pipestone area’s high-altitude desert and along the Continental Divide National Scenic Trail.
The race is continuing to look for willing volunteers, all of whom will be entered in a raffle to win a new Specialized Hardrock mountain bike.