Red Sandstone/Muddy Pass Road loop

The Red Sandstone/Muddy Pass Road loop is considered a difficult gravel ride, demanding very good fitness and advanced riding skills. The majority of the climbing, which can be quite brutal, is concentrated in the initial part of the loop. Some sections are steep, rough, and loose, potentially requiring you to push your bike.

You'll encounter a varied mix of surfaces, primarily gravel. This includes graded dirt roads, some paved sections, cycleways, and even some singletrack and paths. While parts of the Red Sandstone Road are well-maintained, other sections, especially closer to camping areas, can be quite rough. The natural contrast of red dirt with green landscapes is a notable visual feature.

This route offers rugged beauty and great views. You'll get excellent vistas of the Gore and Sawatch Ranges, as well as views south over Vail Mountain. Look out for spectacular aspen groves and remote stretches of gravel just outside the Eagles Nest Wilderness. You'll also pass by Nottingham Lake and ride along Red Sandstone—Muddy Pass Road and Eagle Valley Trail.

Given its length and significant elevation gain, this loop can take over 7 hours to complete for most riders. It's a substantial challenge that requires a full day.

While specific trailhead parking isn't detailed, the loop is near Avon, Colorado. Many riders start from areas in or around Avon. Be aware that some sections of Red Sandstone Road can experience heavy vehicle traffic, especially when connecting to areas like Piney Lake, so plan your parking and ride accordingly.

The best time to ride is typically from late spring through fall. However, snow can persist in the Muddy Pass area until July, so check conditions if planning an early summer ride. The fall season is particularly recommended for viewing stunning autumn colors, especially the aspens near Muddy Pass.

The Red Sandstone/Muddy Pass Road loop traverses areas within the White River National Forest. Generally, dogs are allowed on trails in National Forests but must be kept on a leash. Always practice Leave No Trace principles and pack out all waste.

This route is located within the White River National Forest. Typically, there are no entrance fees required for general access to National Forests. However, specific permits might be needed for certain activities like dispersed camping along Red Sandstone Road. It's always a good idea to check the White River National Forest website for the most current regulations.

Given the challenging nature and varied terrain, you should bring a well-maintained gravel bike with appropriate tires for rough surfaces. Essential gear includes plenty of water, high-energy snacks, navigation tools (GPS device or komoot app with offline maps), a repair kit, extra layers of clothing for changing weather, and sun protection. Due to the remote stretches, consider carrying a first-aid kit and emergency communication device.

Yes, be prepared for a brutal ascent concentrated at the beginning of the loop. Snow can linger in the Muddy Pass area until July, so check conditions if riding early in the season. Also, some sections of Red Sandstone Road can experience heavy vehicle traffic, especially when connecting to areas like Piney Lake, so be mindful of sharing the road with cars.

Yes, the route incorporates sections of several other paths. You'll find yourself on parts of the Gore Valley Trail, Eagle Valley Trail, and North Recreation Path. It also touches on Moniger, Moniger Road, Freeman Creek, and Muddy Pass Road, among others, offering a diverse riding experience.