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Road cycling routes
United States
Colorado
Garfield County

New Castle

The best road cycling routes around New Castle

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Road cycling routes around New Castle traverse a landscape characterized by river valleys, reservoirs, and state park areas. The terrain offers moderate climbs and descents, providing varied experiences for road cyclists. This region features routes that connect natural water bodies with surrounding open spaces, often with views of the surrounding hills.

Best road cycling routes around New Castle

  • The most popular road cycling route is New Castle – Rifle Gap Reservoir loop from New Castle, a 43.1 miles (69.4 km) trail that takes 3 hours 5 minutes to complete. This route features significant elevation gain and circles a large reservoir.
  • Another top favourite among local road cyclists is New Castle to Rifle Gap State Park loop, a moderate 40.2 miles (64.8 km) path. This route includes varied terrain leading towards a state park.
  • Local road cyclists also love the New Castle – Grass Valley Reservoir loop from New Castle, a 21.8 miles (35.2 km) trail leading through areas around Grass Valley Reservoir, often completed in about 1 hour 38 minutes.
  • Road cycling around New Castle is defined by reservoir loops, state park connections, and moderate hill climbs. The network offers options for different ability levels, with all 6 routes being moderate.
  • The guide includes highly-rated routes that showcase the best of the region's landscape. More than 30 road cyclists have used komoot to explore New Castle's varied terrain.

Last updated: July 7, 2026

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#1.

New Castle to Rifle Gap State Park loop

64.8km

02:49

630m

630m

The New Castle to Rifle Gap State Park loop is a scenic road cycling adventure that immerses you in the diverse beauty of Colorado's landscape. You'll pedal through river valleys and open spaces, with the clear blue waters of Rifle Gap Reservoir providing a stunning contrast against the rugged backdrop of pinyon and cedar-covered mountains. The route offers continuous visual interest, from the Grand Hogback vistas to the tranquil state park areas, making it a rewarding experience for any cyclist.

This moderate 40.2-mile (64.8 km) road cycling route is generally well-paved and suitable for road bikes, featuring a rolling profile with about 2051 feet (625 metres) of elevation gain. It's a popular choice for local road cyclists and requires a moderate level of fitness to comfortably complete the approximately 2 hours and 49 minutes of cycling. If you're looking for New Castle to Rifle Gap State Park loop cycling routes that combine exercise with natural beauty, this is a prime candidate.

Situated at an elevation of about 6,000 feet, Rifle Gap State Park itself is a central feature, known for its 360-acre reservoir and the chance to spot wildlife like mule deer, elk, and various bird species. This loop highlights the region's unique blend of natural water bodies and expansive open landscapes, offering a memorable ride that showcases the best of Rifle Gap State Park bike trails.

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Moderate

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

Moderate
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Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

Moderate

The New Castle – Rifle Gap Reservoir loop offers a dynamic road cycling experience through Garfield County's varied terrain. You'll pedal past picturesque river valleys, expansive hay meadows, and through pinyon-juniper woodlands, all while enjoying views of the impressive Rifle Gap Reservoir. Keep an eye out for local wildlife like mule deer and osprey as you navigate the rolling profile and sustained climbs.

This moderate 46.9-mile (75.5 km) route, with its 2899 feet (883 metres) of elevation gain, typically takes around 3 hours and 25 minutes to complete. It's a challenging ride that requires good fitness, especially given the significant elevation changes. Starting from New Castle, the route connects natural water bodies with open spaces, providing a diverse experience for cyclists.

Known as the most popular road cycling route in the New Castle area, this loop is a prime example of the region's excellent reservoir cycling. While primarily paved, be prepared for some potentially unpaved and difficult segments. The route's appeal lies in its blend of scenic beauty and physical challenge, making it a rewarding option for those seeking a substantial day on the bike.

Moderate

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

Moderate

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Popular around New Castle

Hiking around New Castle

Running Trails around New Castle

Tips from the Community

Fargo
April 6, 2026, New Castle

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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AaronLavanchy
December 13, 2023, Rifle

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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AaronLavanchy
November 15, 2023, New Castle

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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AaronLavanchy
November 15, 2023, Rifle

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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AaronLavanchy
November 15, 2023, Colorado River

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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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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Frequently Asked Questions

What kind of terrain can I expect on road cycling routes around New Castle?

Road cycling routes around New Castle, Colorado, traverse a landscape characterized by river valleys, reservoirs, and state park areas. The terrain offers moderate climbs and descents, providing varied experiences. You'll often find routes connecting natural water bodies with surrounding open spaces, frequently with views of the surrounding hills.

Are there any easy road cycling routes for beginners in New Castle?

All 6 road cycling routes listed in this guide for New Castle are rated as moderate. While there aren't any specifically designated 'easy' routes, the moderate routes offer options for different ability levels. For example, the New Castle – Grass Valley Reservoir loop from New Castle is shorter, at 21.8 miles (35.2 km), which might be a good starting point for those looking for a less strenuous ride.

What are the typical distances and elevations for road cycling routes in this New Castle region?

The road cycling routes around New Castle, Colorado, vary in length and elevation. You can expect distances ranging from approximately 21.8 miles (35.2 km) for routes like the New Castle – Grass Valley Reservoir loop, up to 43.1 miles (69.4 km) for the New Castle – Rifle Gap Reservoir loop. Elevation gains are moderate, typically between 400 and 740 meters (1,300-2,400 feet) per route.

Are the road cycling routes in New Castle suitable for families?

The routes in this guide are generally rated as moderate, which means they might be more suitable for families with some cycling experience or older children. The terrain includes moderate climbs and descents. For very young children or those new to cycling, you might consider shorter sections or exploring local parks in the New Castle, Colorado area that offer paved paths.

What kind of scenic views can I expect while road cycling around New Castle?

Road cycling around New Castle, Colorado, offers scenic views primarily centered around reservoirs and state park landscapes. Routes often feature views of surrounding hills, river valleys, and open spaces. For example, the New Castle – Rifle Gap Reservoir loop circles a large reservoir, providing expansive water views.

Are there any circular road cycling routes available?

Yes, all the road cycling routes featured in this guide for New Castle, Colorado, are circular loops. This means you'll start and end your ride in the same general area, making logistics like parking more convenient. Examples include the New Castle to Rifle Gap State Park loop and the Grass Valley Reservoir – New Castle loop from Harvey Gap State Park.

What is the best season for road biking in New Castle, Colorado?

Given the region's characteristics with reservoirs and state parks, spring, summer, and fall are generally the best seasons for road biking in New Castle, Colorado. These seasons offer more favorable weather conditions, with less chance of snow or ice, and allow for full enjoyment of the natural landscapes. Winter cycling might be possible but could be impacted by colder temperatures and snow.

Are there opportunities for wildlife spotting along the road cycling routes?

While not explicitly guaranteed, cycling through areas like Rifle Gap State Park and around various reservoirs in New Castle, Colorado, can offer opportunities for wildlife spotting. These natural habitats are home to various birds and other local fauna. Keeping an eye out, especially during quieter times of day, might reward you with sightings.

Where can I find parking for road cycling trails in New Castle, Colorado?

For road cycling routes around New Castle, Colorado, parking is typically available near the starting points of the loops, especially at state parks or designated trailheads. For instance, routes like the New Castle to Rifle Gap State Park loop would likely have parking facilities at or near the state park entrance or within the town of New Castle itself.

Are there any specific attractions or points of interest along the road cycling routes?

The primary attractions along the road cycling routes in this New Castle region (Colorado) are the natural features themselves, such as Rifle Gap Reservoir, Grass Valley Reservoir, and the landscapes of Rifle Gap State Park and Harvey Gap State Park. These offer scenic beauty and opportunities for outdoor enjoyment beyond just cycling.

Can I find amenities like cafes or pubs along the road cycling routes in New Castle, Colorado?

The road cycling routes around New Castle, Colorado, often traverse more natural and open areas, connecting to state parks and reservoirs. While the routes themselves might not have frequent cafes or pubs directly along the path, the town of New Castle would be the primary place to find such amenities for pre- or post-ride refreshments.

How many road cycling routes are covered in this guide for New Castle?

This guide features 6 distinct road cycling routes around New Castle, Colorado. All of these routes are rated as moderate, offering a consistent level of challenge and enjoyment for road cyclists.

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