Fort Collins to Estes Park to Lyons loop via Big Thompson Canyon

This is a difficult road cycling loop, requiring very good fitness. It involves substantial elevation gain, with over 7,000 feet of climbing and distances exceeding 100 miles, which can take more than 5 hours to complete. It's recognized as a 'blockbuster' ride for those who enjoy climbing.

The route primarily features well-paved surfaces, though some segments might be unpaved or difficult. The Big Thompson Canyon section is narrow and twisting, following the Big Thompson River. While there is a shoulder, cyclists should use caution due to traffic. Other parts, like sections of Highway 36, offer a substantial shoulder, while some near Estes Park may lack one.

You'll experience spectacular alpine scenery, including towering cliffs, lush forests, and the flowing Big Thompson River. Highlights include breathtaking views, glimpses of Longs Peak, and picturesque bodies of water such as Lake Estes and Lily Lake. The Big Thompson Canyon itself is considered one of the most stunning drives in the United States.

The best time to cycle this loop is typically during the warmer months when mountain passes are clear of snow and ice. Spring through fall offers the most favorable conditions, but always check local weather forecasts, especially for mountain areas, as conditions can change rapidly.

As this is a loop starting and ending in Fort Collins, you would typically park in Fort Collins. Specific parking areas can vary, but public parking lots or street parking in Fort Collins would be suitable starting points for the loop.

No specific permits or entrance fees are required for cycling this road loop itself. However, parts of the route may pass through or near Roosevelt National Forest. While cycling on public roads within the forest generally doesn't require a fee, always be aware of any posted regulations if you venture onto specific trails or recreation areas.

This is a road cycling route with significant traffic, especially through Big Thompson Canyon. It is not suitable for dogs, as they would be exposed to dangerous road conditions and vehicles. It's best to leave your furry friends at home for this particular ride.

Yes, the loop passes through charming towns like Estes Park and Lyons, which offer excellent opportunities for rest, food, and amenities. Lyons, in particular, is a known hub for road bikers with cafes and pubs. You'll also pass by Masonville Mercantile early in the ride.

While primarily a road cycling route, it does briefly intersect with or run parallel to sections of other paths, including the Saint Vrain Avenue Trail and the Fossil Creek Trail. However, the vast majority of the route is on public roads.

The Big Thompson Canyon section (US Highway 34) is exhilarating but requires caution. It's narrow and twisting, and while there's a shoulder, you'll be sharing the road with vehicles, including RVs and trucks, especially during peak seasons. Be vigilant, ride defensively, and consider riding during off-peak hours to minimize traffic exposure.

The loop covers approximately 181 kilometers (112 miles) with an elevation gain of about 2,318 meters (7,600 feet). This makes it a significant challenge for road cyclists.