The Great Divide Mountain Bike Route (GDMBR) is the most recognized and important off-pavement cycling route in the United States, if not the world. The route crisscrosses the Continental Divide from north to south starting in Banff, Alberta, Canada and finishing at the US/Mexico border in Antelope Wells, New Mexico.
The route is best known for the Tour Divide, an annual self-supported race. In this event, the race clock runs 24 hours a day and riders are allowed no outside support other than access to public facilities such as stores, motels, and bike shops. The record time to complete the Tour Divide
is 13 days, 22 hours and 51 minutes and was set in 2016 by Mike Hall (see Trail Notes for a full list of records). The Tour Divide has been raced and completed on both single speed bicycles and tandem bicycles. The race, which has neither entry fees nor prizes, usually starts in the second weekend of June.
