30
riders
5
rides
Road cycling routes around Silt, Colorado, offer diverse landscapes with views of the Rocky Mountains and the Colorado River. The terrain includes well-paved surfaces and routes with significant elevation gains, catering to various fitness levels. Key natural features like Rifle Gap State Park and Harvey Gap State Park provide scenic backdrops for rides. The area's proximity to the Roan Plateau further contributes to the varied outdoor environment.
Last updated: May 5, 2026
4
riders
64.8km
02:49
630m
630m
Cycle the moderate 40.2-mile New Castle to Rifle Gap State Park loop, gaining 2051 feet in elevation with scenic views of the reservoir.
8
riders
35.2km
01:38
400m
400m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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9
riders
35.2km
01:39
410m
410m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
4
riders
65.6km
02:50
600m
600m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
5
riders
75.5km
03:26
880m
880m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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Good start/stop point is downtown New Castle at the Down Valley Brewery for a post ride beverage.
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Grass Valley Reservoir, located in Harvey Gap State Park, is a scenic lake set amid the Rocky Mountains.
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New Castle is just west of Glenwood Springs at 5,597 feet in elevation. The historic downtown area, with local restaurants and shops, is perfect for exploring on foot or bike.
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This 350-acre reservoir is part of Rifle Gap State Park and provides some of Colorado's best boating, fishing, swimming and windsurfing. There is also a campground along the northern shore of the reservoir.
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Rifle is located along the Colorado River and Interstate 70, just east of the Roan Plateau. While it's known for cattle ranching, there are however a wide variety of outdoor activities in the Rifle area.
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New Castle is just west of Glenwood Springs at 5,597 feet in elevation. The historic downtown area, with local restaurants and shops, is perfect for exploring on foot or bike.
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Rifle is located along the Colorado River and Interstate 70, just east of the Roan Plateau. While it's known for cattle ranching, there are however a wide variety of outdoor activities in the Rifle area.
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The Colorado River is one of the principal rivers in the Southwestern U.S. This section of the river offers lots of great fishing and rafting opportunities.
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Road cycling routes around Silt offer diverse and picturesque landscapes. You'll frequently encounter stunning views of the Rocky Mountains and the Colorado River. Key natural features like Rifle Gap State Park and Harvey Gap State Park also provide scenic backdrops for your rides, with the broader area benefiting from its proximity to the Roan Plateau.
The road cycling routes in the Silt area are generally considered moderate. They cater to various fitness levels, ranging from well-paved surfaces to routes with significant elevation gains. While there are no routes classified as 'easy' or 'difficult' in this guide, the moderate options provide a good challenge for most cyclists.
Yes, many road cycling routes around Silt feature notable elevation gains. For example, the New Castle – Rifle Gap Reservoir loop from New Castle includes over 730 meters of ascent, offering a challenging ride with rewarding views.
Absolutely. Many of the popular road cycling routes around Silt are designed as loops, allowing you to start and finish in the same location. Examples include the New Castle to Rifle Gap State Park loop and the Grass Valley Reservoir – New Castle loop from Harvey Gap State Park.
Road cycling routes around Silt offer several scenic landmarks and viewpoints. You'll enjoy views of the Colorado River and the majestic Rocky Mountains. Specific routes often pass through or near Rifle Gap State Park and Harvey Gap State Park, providing beautiful reservoir views and opportunities to appreciate the natural beauty of the area.
Yes, for those seeking longer rides, routes like the New Castle – Rifle Gap Reservoir loop from New Castle cover approximately 69 kilometers (43 miles). Another option is the Rifle Gap Reservoir – Rifle loop from New Castle, which is about 64 kilometers (40 miles) long.
While specific seasonal data isn't provided, Silt's location in Western Colorado suggests that spring, summer, and fall generally offer the best conditions for road biking. These seasons typically provide pleasant temperatures and clear skies, allowing for enjoyable rides through the diverse landscapes. Always check local weather forecasts before heading out.
Yes, nearby towns like New Castle, which is west of Glenwood Springs, offer historic downtown areas with local restaurants and shops. These can be excellent spots to refuel and relax during or after your ride. Some routes, such as the New Castle – Grass Valley Reservoir loop from New Castle, start and end in New Castle, making it convenient for stops.
The road cycling experience in Silt is largely defined by its stunning natural features. Riders can expect to see the impressive Rocky Mountains, the winding Colorado River, and the serene waters of Rifle Gap State Park and Harvey Gap State Park. The area's varied terrain, influenced by its proximity to the Roan Plateau, adds to the diverse scenery.
This guide features 5 highly-rated road cycling routes around Silt. These routes showcase the best of the region's landscape and have been explored by over 20 road cyclists using komoot.
Among the most popular routes are the New Castle to Rifle Gap State Park loop, which offers views of Rifle Gap State Park, and the New Castle – Grass Valley Reservoir loop from New Castle, winding through the landscape around Grass Valley Reservoir.
Beyond road cycling, the Silt area offers a wealth of outdoor pursuits. The Colorado River is excellent for fishing and rafting. Rifle Gap State Park and Harvey Gap State Park are popular for boating, fishing, swimming, and windsurfing. Nearby areas also provide singletrack trails for dirt biking, and historic towns like New Castle are great for exploring.


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