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Routes
Road cycling routes
United States
Colorado
Larimer County
Fort Collins

Carter Lake loop

Moderate

2.6

(22)

81

riders

Carter Lake loop

04:36

87.6km

750m

Road cycling

Cycle the moderate Carter Lake loop, a 54.4-mile route in Roosevelt National Forest with 2474 feet of elevation gain and Front Range views.

Last updated: February 26, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Redtail Grove Natural Area

Waypoints

A

Start point

Parking

Get Directions

1

16.1 km

Masonville Mercantile

Highlight • Rest Area

The Masonville Mercantile is a quirky general store in the tiny town of Masonville just southwest of Fort Collins. Although they sell all sorts of items from wedding dresses to …

Tip by

2

39.2 km

Carter Lake Overlook

Highlight • Viewpoint

Carter Lake is a beautiful reservoir in Loveland, Colorado and a popular destination with cyclists from Boulder, Fort Collins, and beyond. This overlook is a great place to snap a …

Tip by

3

60.1 km

Big Thompson River View

Highlight • Viewpoint

Riding the "Loveland Loop" can get confusing. The Loop signs can be tough to read, but it's fun to make it all the way around town.

Tip by

4

79.2 km

Fossil Creek Park

Highlight • Rest Area

This beautiful park with paths and fossils is perfect for family walks.

Tip by

B

87.6 km

End point

Parking

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Way Types & Surfaces

Way Types

50.5 km

33.3 km

3.66 km

195 m

Surfaces

59.6 km

27.5 km

587 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (1,780 m)

Lowest point (1,490 m)

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Weather

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Today

Thursday 7 May

19°C

-1°C

17 %

Additional weather tips

Max wind speed: 12.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

How challenging is the Carter Lake loop for road cyclists?

This route is considered challenging, featuring significant climbs and exhilarating descents. While many sections have gradual grades, you will encounter steep ramps, especially on the way to Horsetooth Reservoir Overlook and the climb up to Carter Lake. The segment near Carter Lake, known as Rattlesnake, includes a tough six-to-seven-mile climb. It's a solid half-day outing with demanding, but manageable, climbs.

What kind of terrain can I expect on this cycling route?

The route is predominantly paved, with approximately 97-100% paved surfaces. You'll experience diverse terrain, from undulating foothills and pine-studded canyons to rolling farm country. Expect both challenging ascents and thrilling, steep descents, particularly from Carter Lake to County Road 29.

What are the scenic highlights along the Carter Lake loop?

Cyclists can enjoy breathtaking Front Range vistas throughout the ride. Key scenic points include the Carter Lake Overlook, offering expansive views back East over the plains. You'll also pass by the Big Thompson River View, see shimmering reservoir and mountain views, and ride through Apple Valley canyon, a hidden red rock gem. The route also offers glimpses of natural areas like the Cathy Fromme Prairie Natural Area.

Where can I park to access the Carter Lake loop?

While the route starts from Fort Collins, specific parking information for the Carter Lake loop is not detailed in the provided sources. However, as a popular cycling route, parking is generally available in Fort Collins or at various access points around Carter Lake or Horsetooth Reservoir. It's advisable to check local regulations for specific parking areas.

Do I need any permits or pay entrance fees for this route?

The Carter Lake loop passes through areas that may require permits or fees, especially if accessing specific recreational facilities or state parks. For example, Carter Lake is part of Larimer County Parks and Open Lands, which typically requires a pass for entry. It's recommended to check the Larimer County Parks website for current fee information. Additionally, as parts of the broader area are within Roosevelt National Forest, specific regulations may apply there as well.

Is the Carter Lake loop suitable for winter cycling?

Yes, the Carter Lake loop is considered one of the best mountain routes for winter cycling due to its sunny exposure and lower chance of ice on the road compared to other trails. However, always check the weather forecast and road conditions before heading out in winter.

Are there places to refuel or find facilities along the way?

Yes, there are a few options. The Masonville Mercantile is a highlight along the route. During peak summer months, the Carter Lake Marina can be a good stop for regrouping, bathrooms, and nutrition. Another facility highlight is Fossil Creek Park. However, other stops can be sparse, so plan your nutrition and hydration accordingly.

Is the Carter Lake loop suitable for beginners?

Given its significant climbs, challenging descents, and overall 'difficult' rating, the Carter Lake loop is generally not recommended for beginner road cyclists. It's better suited for experienced riders looking for a strenuous and rewarding workout.

What are the regulations for cycling in Roosevelt National Forest?

While the Carter Lake loop itself is primarily a road cycling route, it traverses areas near Roosevelt National Forest. In general, within the National Forest, cyclists must stay on designated roads and trails. Always respect wildlife, pack out what you pack in, and be aware of fire restrictions. Specific regulations regarding e-bikes, group sizes, and camping may also apply depending on the exact location. Check the official US Forest Service website for the most current information.

Does the route intersect other well-known paths?

Yes, the route does intersect with several other paths. Notably, it covers sections of the Loveland Recreation Trail (10% of the route) and the Fossil Creek Trail (6% of the route). You'll also find smaller segments overlapping with the Mason Trail and the Westside Trail.

Is the Carter Lake loop dog-friendly?

As a road cycling route, the Carter Lake loop is primarily designed for cyclists on paved roads. While dogs may be allowed in certain parks or open spaces along the route, they are generally not permitted to run alongside cyclists on the main road sections for safety reasons. If you plan to bring a dog, ensure they are secured in a bike trailer or check specific park regulations for any off-leash areas or designated dog-friendly trails that might intersect the route.

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