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Mountain biking trails
United States
Colorado
Custer County

Rainbow Trail via Colfax Lane loop

Moderate

4.8

(4160)

16,439

riders

Rainbow Trail via Colfax Lane loop

02:17

23.9km

620m

Mountain biking

Mountain bike the moderate Rainbow Trail via Colfax Lane loop in San Isabel National Forest, offering scenic views and diverse terrain.

Last updated: February 26, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

San Isabel National Forest

Waypoints

A

Start point

Parking

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1

14.9 km

Rainbow Trail

Highlight (Segment) • Trail

The Rainbow Trail is a nontechnical double track trail which passes by a couple creek waterfalls, with views out from the Sangre de Cristos. The trail is half exposed, half in the trees on the slope of Beck Mountain.

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B

23.9 km

End point

Parking

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Way Types & Surfaces

Way Types

9.91 km

8.85 km

5.18 km

Surfaces

14.0 km

9.95 km

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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 (3,030 m)

Lowest point (2,530 m)

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Weather

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Today

Monday 19 October

13°C

2°C

11 %

Additional weather tips

Max wind speed: 9.0 km/h

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Frequently Asked Questions

Where can I park to access the Rainbow Trail via Colfax Lane loop?

You can typically access the Rainbow Trail via the Colfax Lane access point. Parking is usually available at or near this trailhead within the San Isabel National Forest. Always check local signage for specific parking regulations.

What is the difficulty level and terrain like on this mountain biking loop?

This specific loop is generally rated as moderate. It's described as a non-technical double track trail, meaning it's less challenging in terms of obstacles than singletrack. However, its length of nearly 24 kilometers and elevation gain of over 600 meters require good fitness. While this loop is smoother, other sections of the broader Rainbow Trail can be rocky, steep, and loose.

What kind of scenery can I expect along the route?

The loop offers beautiful scenery, including views out from the Sangre de Cristo Mountains. You'll pass by creek waterfalls and experience a mix of exposed sections and areas shaded by trees on the slope of Beck Mountain. The wider Rainbow Trail is known for rambling through spruce forests, aspen groves, and high mountain meadows.

Is the Rainbow Trail via Colfax Lane loop dog-friendly?

Yes, dogs are generally allowed on trails within the San Isabel National Forest. However, they must be kept on a leash to protect wildlife and ensure a pleasant experience for all trail users. Always practice Leave No Trace principles, including packing out pet waste.

Do I need a permit or pay an entrance fee for this trail in the Pike-San Isabel National Forest?

Generally, there are no specific permits or entrance fees required to access the Rainbow Trail via Colfax Lane loop within the San Isabel National Forest for day use. However, regulations can change, and some areas might require permits for specific activities or overnight stays. It's always a good idea to check the official U.S. Forest Service website or local ranger district for the most current information before your visit.

What is the best time of year to mountain bike this loop?

Given its average elevation of 9,000 feet, the best time to mountain bike this loop is typically from late spring through early fall (roughly May to October), once the snow has melted and before new snow arrives. Always check current trail conditions, as weather can be unpredictable in the mountains.

Is this a multi-use trail, and what other users might I encounter?

Yes, the Rainbow Trail in general is a multi-use trail. While this specific loop might be less trafficked by motorized vehicles, sections of the broader trail are open to hikers, horseback riders, and sometimes motorized vehicles like motorcycles and ATVs. Always be prepared to share the trail and yield appropriately.

What should I pack for a mountain bike ride on this trail?

For a moderate mountain bike ride of this length (nearly 24 km), you should pack plenty of water, snacks, a basic bike repair kit (spare tube, pump, multi-tool), a first-aid kit, sun protection (sunscreen, hat), and layers of clothing as mountain weather can change quickly. A helmet is essential.

Are there any amenities or services near the Colfax Lane access point?

The Colfax Lane access point is located within the San Isabel National Forest, so amenities directly at the trailhead are limited. For services like food, lodging, and bike shops, you would need to visit nearby towns such as Westcliffe or Salida. You can find more information about local services at visitwetmountainvalley.com.

Does this loop connect with other trails?

Yes, the route primarily follows a section of the extensive Rainbow Trail (specifically, the official trail known as Rainbow - 1336). While this loop is a defined route, the Rainbow Trail itself is over 100 miles long and connects with many other trails throughout the San Isabel National Forest, including the Continental Divide and Colorado Trails further afield.

Is there any historical significance to the Rainbow Trail?

Yes, the Rainbow Trail has a rich history, dating back to 1912. It's older than many other famous long-distance trails and was originally built by the U.S. Forest Service for cattle and sheep grazing access, later extended by the Civilian Conservation Corps. It spans multiple counties and offers a glimpse into the region's past.

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