Boulder Rapha and Los Lagos Reservoirs loop

This challenging racebike loop typically takes around 6.5 hours to complete, depending on your pace and stops. It covers a distance of approximately 119 km (74 miles).

This is considered a difficult road ride, characterized by significant elevation gain. Riders should possess very good fitness and be prepared for high-altitude cycling, with ascents totaling over 2,100 meters (7,000 feet).

No, this route is not suitable for beginners. It's a hard road ride with substantial elevation gain and high-altitude sections, requiring very good fitness and experience with challenging cycling conditions.

The route is mostly on well-paved surfaces, but be aware that there may be segments that are unpaved and difficult to ride, potentially requiring you to push your bike. You'll be cycling through mountainous terrain with stunning views.

You'll experience the scenic Golden Gate Canyon Road, the beautiful Los Lagos Reservoirs situated at 8,625 feet, and pass by the Rapha Boulder Clubhouse. The entire loop offers picturesque mountain landscapes within the Roosevelt National Forest.

The best time to cycle this high-altitude loop is typically from late spring through early fall (roughly May to October) when the roads are clear of snow and ice, and weather conditions are most favorable. Always check local weather and road conditions before you go.

As this is primarily a road cycling route that passes through Roosevelt National Forest and potentially Golden Gate Canyon State Park, specific regulations for dogs can vary. Generally, dogs are allowed on leash in Roosevelt National Forest, but check park-specific rules for any sections within Golden Gate Canyon State Park or other managed areas for their policies on pets on roads and trails.

While cycling through Roosevelt National Forest typically doesn't require a specific permit for the activity itself, sections of the route may pass through or near Golden Gate Canyon State Park. This state park has an entrance fee, which can be paid daily or with an annual pass. It's advisable to check the official Colorado Parks & Wildlife website for current fee structures and any specific regulations for cyclists within the park boundaries.

Specific parking for this exact loop isn't universally designated, as it's often a route created by local cyclists. However, you can typically find parking in Boulder, near the Rapha Boulder Clubhouse, or at various access points along the route within Roosevelt National Forest or near Golden Gate Canyon State Park. Always verify parking regulations and availability beforehand.

Yes, this route incorporates sections of several other paths. You'll find yourself on parts of the Broadway Path and Boulder Creek Path, among others. It also briefly touches on trails like B360 and Marshall Mesa.

Given the route's difficulty and high-altitude nature, you should bring plenty of water, nutrition, appropriate layers for changing mountain weather, sun protection, a repair kit, and a fully charged phone. A GPS device with the route loaded is also highly recommended, as the exact path might require navigation.