4.7
(2102)
18,469
hikers
07:42
23.4km
1,170m
Hiking
Embark on a challenging high-altitude adventure with Colorado Trail: Segment 21, a difficult hike spanning 14.5 miles (23.4 km). You will gain a significant 3824 feet (1166 metres) in elevation, requiring approximately 7 hours and 41 minutes to complete. The route takes you through dynamic landscapes, from lush forests to…
Last updated: April 23, 2026
Tips
Your route passes through protected areas
Please check local regulations for:
Waypoints
Highlight • Mountain Pass
Tip by
2.79 km
Highlight • Viewpoint
Tip by
5.23 km
Highlight • Viewpoint
7.89 km
Highlight • River
8.33 km
Highlight • Lake
10.2 km
Highlight • Mountain Pass
Tip by
11.3 km
Highlight • Summit
14.3 km
Highlight • Summit
14.3 km
Highlight • Mountain Pass
17.1 km
Highlight • River
Tip by
23.4 km
End point
Way Types & Surfaces
Way Types
23.4 km
Surfaces
22.6 km
741 m
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Elevation
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Weather
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Sunday 10 May
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Max wind speed: 15.0 km/h
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This route was planned by komoot.
The Colorado Trail: Segment 21 is approximately 14.5 miles (23.4 km) long. While it can be completed in a single day, with an estimated hiking time of 6-8 hours, many hikers choose to camp along the way due to its challenging nature and significant elevation changes. The total duration for the komoot tour is around 7 hours and 42 minutes.
The terrain on this segment is highly varied and challenging. You'll experience transitions from lush forests and wildflower meadows to vast expanses of high tundra, particularly the 3.3-mile stretch across Snow Mesa. The trail is largely above the treeline, offering panoramic views but also significant exposure. Expect a mix of gradual and steeper inclines, undulating 'rollers', and descents into aspen groves. The high point can reach up to 12,872 feet.
Colorado Trail: Segment 21 is generally rated as difficult. It involves significant elevation changes, high altitudes (mostly above 10,000 feet), and exposed sections. While considered 'remarkably doable' with proper preparation, it's not recommended for beginners. Hikers should have experience with strenuous, high-altitude treks and be prepared for quickly changing weather conditions.
This segment offers breathtaking high-altitude scenery. Key highlights include Spring Creek Pass, the expansive Edge of Snow Mesa with its unobstructed views, and a stunning View of the San Juan Mountains. You'll also pass by Willow Creek and a Small lake, and traverse several high points and saddles offering incredible vistas.
The best time to hike this segment is typically from late June through September, after the snow has melted and before the first significant autumn snowfalls. During this period, wildflowers are often abundant, and the weather is generally more stable, though afternoon thunderstorms are common and hikers should always be prepared for quickly changing conditions at high altitudes.
Yes, this segment of the Colorado Trail is suitable for dogs. There are plentiful water sources along the way, which is beneficial for both hikers and their canine companions. Always ensure your dog is on a leash and that you pack out all waste.
The segment connects San Luis Pass to Spring Creek Pass Trailhead. Access to the trailhead at San Luis Pass is not directly by standard vehicle; it often requires a 4WD vehicle to a nearby point, followed by a hike to the pass itself. Spring Creek Pass is a more accessible point and a common access point for thru-hikers to hitch into Lake City for resupply.
Colorado Trail Segment 21 passes through the La Garita Wilderness. While there are generally no permits required for day hiking or backpacking on the Colorado Trail itself, standard wilderness regulations apply. There are no entrance fees for accessing this part of the trail. Always practice Leave No Trace principles.
Hikers on this segment may spot various local wildlife, including deer, elk, and foxes. The high-alpine environment also supports a variety of bird species. Remember to observe wildlife from a distance and never feed animals.
Yes, the route is part of the larger Colorado Trail and the CDT - Colorado Section. It also overlaps with significant portions of the Continental Divide National Scenic Trail, offering a truly immersive experience on some of America's most iconic long-distance routes.
Given the high altitude and exposed sections, especially on Snow Mesa, it's crucial to pack for quickly changing weather. Essential items include layers of clothing (even in summer), rain gear, sun protection (hat, sunglasses, sunscreen), plenty of water, high-energy snacks, a map and compass/GPS, and a first-aid kit. Starting early in the morning is recommended to avoid afternoon thunderstorms.