2.6
(22)
34
hikers
15:57
41.0km
1,600m
Hiking
Embark on the Outer Mountain Loop, a difficult 25.5-mile (41.0 km) hiking route that takes you through the diverse landscapes of Big Bend National Park. You will experience a dramatic shift from the piñon, juniper, and oak woodlands of the Chisos Mountains to the expansive Chihuahuan Desert. With an elevation…
Last updated: April 23, 2026
Tips
Your route passes through a protected area
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Waypoints
Start point
Parking
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624 m
Highlight • Historical Site
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Tip by
22.4 km
Highlight • Viewpoint
Tip by
41.0 km
End point
Viewpoint
Way Types & Surfaces
Way Types
39.7 km
1.19 km
145 m
Surfaces
38.4 km
2.54 km
134 m
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Elevation
Highest point (2,190 m)
Lowest point (1,160 m)
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Weather
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Today
Friday 22 May
29°C
17°C
19 %
Additional weather tips
Max wind speed: 13.0 km/h
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This route was planned by komoot.
No, the Outer Mountain Loop is considered extremely challenging and is not recommended for inexperienced hikers or as a first-time Big Bend hike. It demands significant physical endurance, careful planning, and experience with primitive trail conditions and self-sufficiency.
Most hikers plan for at least three days to complete the 30-mile (48 km) circuit. This allows for sufficient time to manage the strenuous terrain, significant elevation changes, and the need for water caching.
The terrain is highly diverse and strenuous. It transitions from the piñon, juniper, and oak woodlands of the Chisos Mountains to the arid Chihuahuan Desert. You'll encounter considerable ascents and descents, including a steep 2,000-foot drop on the Juniper Canyon Trail and a 2,500-foot climb up Blue Creek Canyon. Sections like the Dodson Trail are particularly exposed and can be tricky to navigate through desert washes.
The trail typically starts from the Chisos Basin in Big Bend National Park. Parking is available at the Chisos Basin trailhead. Backpacking permits are required for all overnight stays.
Yes, backpacking permits are required for all overnight stays on the Outer Mountain Loop. You should check the official Big Bend National Park website for current regulations and how to obtain permits.
No, there are no reliable natural water sources along the 30-mile loop. Caching water at designated locations, such as Homer Wilson Ranch and the end of Juniper Canyon Road, is a critical and defining aspect of this hike. Hikers must carry all necessary water or arrange for caches.
Big Bend National Park has strict regulations regarding pets. Generally, pets are not allowed on trails, off roads, or in the backcountry. Always check the current park regulations on the official nps.gov website before planning your trip with a pet.
Big Bend National Park charges an entrance fee. This fee typically covers entry for a certain number of days. For the most current information on fees and passes, please visit the official National Park Service website for Big Bend National Park at nps.gov.
The best time to hike is during the cooler months, typically from late October through April. It is strongly advised to avoid this hike during the hotter months, from early May through early October, due to extreme heat and lack of shade, which significantly increases the risk of dehydration and heat-related emergencies.
You'll experience a wide variety of breathtaking scenery. This includes panoramic views of the Chisos Mountains, the vast Chihuahuan Desert extending into Mexico, and distant landmarks like Santa Elena Canyon. Highlights include picturesque views of pinnacles, the Sierra del Carmens, and the diverse flora and fauna of Boot Canyon. You'll transition from shaded woodlands to exposed desert landscapes.
Yes, the route offers several notable points. You'll pass by the historic Homer Wilson Ranch, and enjoy the stunning View from Dodson Trail to Juniper Canyon. The diverse ecosystems and dramatic geological formations throughout the Chisos Mountains and Chihuahuan Desert are constant points of interest.