4.6
(5260)
11,771
runners
03:40
22.5km
960m
Running
If you're looking for a demanding jogging experience, the Devils Thumb Loop is a difficult 14.0-mile (22.5 km) route that will challenge you with a significant 3145 feet (959 metres) of elevation gain. Expect to spend around 3 hours and 40 minutes navigating its diverse terrain. You will jog through dense forests and vibrant meadows, eventually reaching exposed alpine tundra. Keep an eye out for flowing creeks and waterfalls as you make your way towards stunning alpine lakes like Jasper Lake and King Lake. From high points such as Devil's Thumb Pass, you can enjoy panoramic vistas of the snow-capped Continental Divide. This loop offers a strenuous but rewarding journey for experienced runners.
This route is not suitable for casual joggers; you will need physical preparation for high altitude and rapid weather changes, including summer thunderstorms. While it can be completed as a long day jog, be aware that permits are required for any overnight stays in the Indian Peaks Wilderness. Always carry adequate water and food for the entire duration of your trip. Plan your visit carefully to ensure you are prepared for the conditions.
The Devils Thumb Loop is notable for its journey through the Indian Peaks Wilderness, showcasing a dramatic transition from lush lower elevations to stark alpine environments. The trail's significant elevation gain and diverse ecosystems make it a true test of endurance and a highlight for those seeking a challenging mountain jog. It provides an immersive experience into a pristine natural landscape, far removed from urban settings.
Last updated: April 23, 2026
Tips
Your route passes through protected areas
Please check local regulations for:
Indian Peaks Wilderness
Waypoints
Start point
Parking
Get Directions
6.61 km
Highlight • Lake
Tip by
10.1 km
Highlight (Segment) • Trail
Tip by
13.5 km
Highlight • Viewpoint
Tip by
22.5 km
End point
Parking
Way Types & Surfaces
Way Types
15.4 km
7.07 km
< 100 m
Surfaces
15.4 km
4.72 km
2.36 km
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Elevation
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Weather
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Today
Saturday 27 June
19°C
7°C
12 %
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Max wind speed: 26.0 km/h
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This route was planned by komoot.
The Hessie Trailhead is a common starting point for the Devils Thumb Loop. Be aware that the initial mile from this trailhead can be quite uneven, with sections described as walking over 'cobblestone sized rocks' along an old fire road.
No, the Devils Thumb Loop is considered a difficult and challenging route, not recommended for casual joggers or those unprepared for high-altitude exertion. It involves significant elevation gain and a long distance, making it a strenuous outing.
The terrain is varied and demanding. You'll encounter consistently uphill sections, rocky paths, and potential snow patches even in summer. Above treeline, the trail can be exposed, with steep climbs, loose gravel, and boulders, especially near passes like Devil's Thumb Pass and the Continental Divide. Lower sections often feature lush areas with flowing creeks and meadows.
The loop offers magnificent scenery, including stunning alpine lakes like Jasper Lake and View of King Lake. You'll also traverse sections of the High Lonesome Trail, pass numerous creeks and waterfalls, and enjoy panoramic vistas from high points like Arapaho Pass and Devil's Thumb Pass.
Yes, the route also passes through sections of the CDT - Colorado Section, Devils Thumb Trail, King Lake, and High Lonesome Trail, among others.
While dogs are generally allowed in the Indian Peaks Wilderness, specific regulations regarding leashes and waste removal apply. Always check the latest rules for the wilderness area before bringing your dog.
The best time is typically summer, especially around July, when wildflowers are in bloom. However, be prepared for rapidly changing weather, including afternoon thunderstorms, particularly in exposed sections above treeline. Snow patches can persist even into summer.
The Devils Thumb Loop is located within the Indian Peaks Wilderness. While day-use permits are not always required, permits are necessary for overnight stays. Always check the current regulations and any potential entrance fees for the Indian Peaks Wilderness before your visit, as rules can change.
You can expect to see abundant wildflowers, especially in meadows during summer. The area is also known for wildlife, with opportunities to spot elk and other high-alpine creatures.
For jogging, the Devils Thumb Loop typically takes around 3 hours and 40 minutes to complete, though this can vary significantly based on fitness levels, weather conditions, and how often you stop to enjoy the scenery.
Given the high altitude, significant elevation changes, and exposed sections, you should bring plenty of water, adequate food, and layers of clothing to adapt to changing weather. Be prepared for potential afternoon thunderstorms and carry navigation tools. Acclimatization to altitude is also highly recommended.
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