New Mexico



The route is the longest mountain bike route in America, spanning 2470 miles (3952 km) from the Mexican border up to the Canadian border. The route generally follows the Continental Divide, crossing it no fewer than 27 times.
  Yes, there's some climbing - over 200,000 ft total (61,000 m). About 90% of the route is on dirt roads or singletrack trails - only 10% of the route is paved.
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Research and mapping for the route began in 1994. The Adventure Cycling Association, commissioned Mac McCoy to set oto link existing roads and trails from Canada to Mexico.
"The Great divide is the longest mountain bike route