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Routes
Hiking trails & Routes
United States
Colorado
Custer County

Rainbow Access from FR 140.B

Easy

5.0

(5782)

18,397

hikers

Rainbow Access from FR 140.B

00:41

2.38km

80m

Hiking

An easy 1.5-mile (2.4 km) multi-use connector trail in San Isabel National Forest, gaining 261 feet (80 metres) in 41 minutes.

Last updated: February 26, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Waypoints

A

Start point

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B

2.38 km

End point

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Way Types & Surfaces

Way Types

1.07 km

853 m

455 m

Surfaces

2.38 km

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Elevation

Elevation

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Weather

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Today

Monday 25 May

17°C

6°C

44 %

Additional weather tips

Max wind speed: 13.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

How long does it take to hike Rainbow Access from FR 140.B?

Based on the komoot tour, hiking this route typically takes around 40-45 minutes to complete. The trail itself is about 857 meters long, but the komoot route covers a total distance of approximately 2.38 kilometers.

What is the terrain like on this trail?

The trail is a multi-use doubletrack, meaning it's a wider path often used by vehicles, which generally offers a more stable surface than singletrack trails. It's rated T2 Mountain Hiking, indicating a continuous trail with a balanced ascent. While comfortable for experienced hikers, it can be partially steep and present a possible risk of falling, so sure-footedness and trekking shoes are recommended. Be aware that a report from May 2022 noted multiple large trees down at 0.1 miles into the trail.

Is Rainbow Access from FR 140.B suitable for beginners?

While rated 'easy' overall for the komoot tour, the trail itself is classified as T2 Mountain Hiking. This means it can be partially steep and requires some sure-footedness. If you're new to mountain hiking, be prepared for varied terrain, and trekking shoes are advisable. It's a short route, making it a good option for those looking for a moderate introduction to mountain trails.

What kind of scenery can I expect along the route?

As a connector trail within the San Isabel National Forest, you'll experience typical Colorado forest environments. This generally includes a mix of forests, potentially featuring spruce and aspen groves, and possibly meadows. While it's a doubletrack, offering less intimate immersion than a narrow singletrack, you'll still be surrounded by the diverse ecosystems and scenic beauty characteristic of the region.

Does this trail intersect with other paths?

Yes, this route serves as a connector trail and intersects with other paths within the San Isabel National Forest. The komoot route itself includes sections of the Rainbow Access from FR 140.B (65%), additional campgrounds (30%), Rainbow Trail (FS1336) (59%), and Comanche Trail (30%). It provides access to a broader network of trails for further exploration.

What is the best time of year to hike this trail?

Given its location in the San Isabel National Forest, the best time to visit is typically during the warmer months, from late spring through early fall, when the weather is most favorable and snow has melted. Always check local weather conditions before heading out, especially for mountain trails where conditions can change rapidly.

Is Rainbow Access from FR 140.B dog-friendly?

Yes, the trail is generally dog-friendly. However, as a multi-use trail within a National Forest, it's crucial to keep your dog on a leash and practice Leave No Trace principles, including packing out all waste. Be mindful of other trail users, including mountain bikers, motorized vehicles, and horseback riders.

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

Generally, day-use hiking on trails within the San Isabel National Forest, like Rainbow Access from FR 140.B, does not require a specific permit or entrance fee. However, some developed recreation sites or specific activities might have fees. It's always a good idea to check the official U.S. Forest Service website for the San Isabel National Forest for the most current regulations regarding permits, fees, and any specific area closures before your visit.

Where can I park to access the Rainbow Access from FR 140.B trail?

The trail is accessed from FR 140.B, which suggests roadside parking or a designated trailhead parking area along that forest road. As a connector trail, it's designed to provide access to the broader network. Look for clear signage or established parking spots near the start of the trail. Always ensure you are not blocking any access roads or private property.

What should I bring for a hike on this route?

Even for a shorter hike, it's wise to be prepared. Given the T2 Mountain Hiking rating, trekking shoes are recommended for sure-footedness. Bring water, especially on warmer days, and snacks. Since it's a multi-use trail, consider wearing bright colors for visibility. Always carry a map or GPS device, as cell service can be unreliable in remote areas of the San Isabel National Forest.

Are there any specific regulations for using multi-use trails in San Isabel National Forest?

Yes, as a multi-use trail, you'll be sharing the path with various users including mountain bikers, e-bikers, dirt bikers, ATV riders, and horseback riders. Always yield to horses, and motorized vehicles should yield to non-motorized users. Hikers should be aware of their surroundings and listen for approaching users. Respect all posted signage and stay on designated trails to protect the natural environment.

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