Great Divide Mountain Bike Route[edit]

The Great Divide Mountain Bike Route (GDMBR) is a continuous long distance cycling route from Banff, Alberta, Canada to Antelope Wells, New Mexico, USA. As of 2010, the route is 2745 miles (4417 KM) long; its length is likely to change over time as the GDMBR is continually being refined to improve it. The GDMBR was developed by the Adventure Cycling Association(ACA) and was inaugurated in 1998.[1] Route maps are available from the ACA. A guidebook has also been published.

Following the Continental Divide as closely as practicable and crossing it 30 times, about 90% of the GDMBR is on unpaved roads and trails and requires off-road riding skills to complete. The unpaved portions of the route range from high quality dirt or gravel roads to a few short sections of unmaintained trails which may not be possible for most people to ride at all. The GDMBR has over 200,000 feet (60960 meters) of elevation gain and loss for the rider to contend with. While most of the GDMBR is off the pavement, the route does not require highly technical mountain bike riding skills to complete. The route has been carefully designed to provide riding mostly on very low trafficked roads through magnificent and undeveloped areas of the Rocky Mountain west..

Logistical issues complicate completing the GDMBR as food and water sources can sometimes be over 100 miles (62 KM) apart. Unpredictable mountain and desert weather can bring snow, rain, high winds, and temperature extremes at any time of year. Most people ride the route north to south. Southbound riders normally cannot start prior to mid June nor later the end of September, however, due to the possibility of deep snow in the mountains and monsoon rains in New Mexico, careful attention to weather and climate is required to ensure the rider can complete the route without having to wait out impassible conditions. On portions of the route, rain can turn some sections of dirt roads into quagmires of adhesive mud; the only options for the rider to pass these obstacles are to wait for the roads to dry or to carry their bike. As much of the route is not signposted, good navigation skills are also necessary. Riders should be self-sufficient and carry camping equipment as commercial lodging is not available for long stretches of the route. It is also helpful to be skilled in bike maintenance and repair. It is also not uncommon to encounter large mammals including Grizzly and Black Bear, Moose, and occasionally Mountain Lion. For all the challenges, properly prepared and equipped riders can expect to have an enjoyable and adventurous experience.

The GDMBR is routed through a variety of terrain and geographic features. Highlights include the Flathead Valley in Alberta, Grand Teton National Park and the Great Basin in Wyoming, South Park, and Boreas Pass in Colorado, and Polavera Mesa and the Gila Wilderness in New Mexico. Colorado's Indiana Pass, at 11,910 feet, is the highest point on the route. On route, the rider will pass through isolated river valleys, mountain forests, wide open grasslands, high desert, and, the the end of the ride, a section of the Chihuahuan Desert. The GDMBR passes though some larger towns, including Helena and Butte, Montana, Pinedale and Rawlins, Wyoming, Steamboat Springs, Breckenridge, Salida, and Del Norte, Colorado, and Grants and Silver City, New Mexico. Otherwise, only extremely small towns will be encountered, limiting the variety of goods and services available.

A few people through-ride the GDMBR every year and trip reports written by some of these riders are available on the ACA website.[2] Typical times to ride the entire route range from six to ten weeks. There are also two entirely self supported races every year on the GDMBR. The Tour Divide [3] follows the entire route, while the Great Divide Race[4], which starts at the border in Roosville, Montana, follows the US portion only. In these events, the race clock runs 24 hours a day and the riders are allowed no outside support other than access to public facilities such as stores, motels, and bike shops. The current record time to complete the Tour Divide is around 17 days, 21 hours.

References[edit]

Cycling the Great Divide: From Canada to Mexico on America's Premier Long Distance Mountain Bike Route; Michael McCoy; Mountaineers Books (June 1, 2000); ISBN-10: 0898866987