Great Divide Mountain Bike Route Active Logging Notice

May 2022

Logging activity is occurring along a 23-mile stretch in the Swan River State Forest. It began in 2019 will last indefinitely. There will be heavy logging traffic and they expect 20-30 trucks coming through daily.

We highly recommend the following detour. Southbound it begins at [F] and rejoins the route at [K]. Though the existing route will be open, State Forest personnel want to minimize any potential conflicts between cyclists and truck traffic. The detour takes cyclists along unpaved roads on the east side of SR 83. It includes a total of 4.8 mi. of riding on SR 83. You can view the detour here:

For more information on this situation or others that may crop up, visit our Temporary ACA Route Road Closure Forum discussion at: and be sure to check for other Map Updates & Corrections before you leave at