2.6
(22)
81
riders
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
Start point
Parking
Get Directions
16.1 km
Highlight • Rest Area
Tip by
39.2 km
Highlight • Viewpoint
Tip by
60.1 km
Highlight • Viewpoint
Tip by
79.2 km
Highlight • Rest Area
Tip by
87.6 km
End point
Parking
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
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.