Great Divide Mountain Bike Route: Ashton to Mesa Falls

The komoot tour data estimates a riding duration of approximately 3.8 hours for the 57 km (35.4 miles) route. This is for the moderate difficulty level, so actual time may vary based on your fitness, pace, and how often you stop to enjoy the scenery, especially at the waterfalls.

The terrain is varied, offering a mix of paved roads, gravel sections, and some more technical off-road riding. While parts of the route, particularly along the Mesa Falls Scenic Byway, are largely paved, other sections like the Bear Gulch Trail or the Rim Trail offer more rugged surfaces with steep climbs, rocky sections, and fast descents through forests and open ridges. You'll encounter dirt roads and gravel roads typical of the broader Great Divide Mountain Bike Route.

The most notable features are the stunning Upper Mesa Falls and Lower Mesa Falls, both within the Caribou-Targhee National Forest. Upper Mesa Falls plunges 114 feet, and Lower Mesa Falls is 65 feet high. You can also visit the historic Big Falls Inn at Upper Mesa Falls, which serves as an interpretive center. The route begins near the settlement of Ashton, Idaho, and offers views of the Teton Range and surrounding valleys.

The difficulty of this route varies. The overall route is rated as moderate, requiring good fitness and advanced riding skills for a dedicated mountain biking experience. Portions along the Mesa Falls Scenic Byway are largely paved and more accessible. However, trails like the Bear Gulch Trail are more challenging with steep climbs and rocky sections. The Mesa Falls Nature Trail, connecting the two falls, is family-friendly and easy to follow for walking or light cycling. Beginners should stick to the paved sections or consider shorter, easier segments.

The best time to mountain bike this route is typically from late spring through early fall (May to October). During these months, the weather is generally favorable, and the trails are clear of snow. Summer offers lush scenery, while fall brings vibrant foliage. Always check local weather and trail conditions before you go, especially in early spring or late fall when conditions can be unpredictable.

Yes, this route is part of the Great Divide Mountain Bike Route, the longest off-pavement cycling route in the world. Along this segment, you will also encounter sections of the Greater Yellowstone - Teton Rail Trail, the Ashton-Tetonia Rail Trail, and the Mesa Nature Trail.

Yes, dogs are generally allowed on trails within the Caribou-Targhee National Forest, but they must be kept on a leash. Always practice Leave No Trace principles, including packing out pet waste. Be aware of wildlife and ensure your dog is under control at all times.

There are no specific permits required for mountain biking this segment of the Great Divide Mountain Bike Route. As it is located within the Caribou-Targhee National Forest, there are typically no entrance fees for general access to the forest trails. However, some developed recreation sites, like those at Mesa Falls, may have day-use fees for parking or facilities. It's always a good idea to check the official Caribou-Targhee National Forest website for the most current information before your visit.

You can typically find parking in Ashton, Idaho, to begin your ride. There are also parking areas available at Upper Mesa Falls and Lower Mesa Falls, which can serve as starting or ending points, or places to park and explore the falls. Specific parking availability can vary, so plan your starting point accordingly.

The Caribou-Targhee National Forest is rich in wildlife. Riders might spot bald eagles, ravens, osprey, moose, ermine, and porcupine. Keep an eye out, especially in the forested and more remote sections. Remember to maintain a safe distance and never approach or feed wild animals.

The town of Ashton, Idaho, serves as a good base with some amenities, including cafes, restaurants, and accommodation options. As you venture further into the Caribou-Targhee National Forest towards Mesa Falls, amenities become more limited. It's advisable to carry sufficient water and snacks for your ride, as services are sparse along the route itself.