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Routes
Hiking trails & Routes
United States
Utah
Garfield County
Escalante

Boulder Mail Trail

Hard

5.0

(7439)

15,331

hikers

Boulder Mail Trail

07:39

25.7km

730m

Hiking

The Boulder Mail Trail offers a challenging hiking experience, covering 16.0 miles (25.7 km) with a significant elevation gain of 2410 feet (734 metres). This difficult route typically takes around 7 hours and 38 minutes to complete. You will journey through a diverse landscape, from juniper forests and slickrock expanses to sandy washes and sagebrush, encountering wide, white plateaus and domes.

Planning your hike requires attention to detail, as permits are necessary for accessing the Boulder Mail Trail. Be sure to secure yours in advance to avoid any issues. You should also be aware that certain sections of the trail, particularly within Death Hollow, may have poison ivy, so wearing long pants is a good idea. Navigation across slickrock areas demands careful observation of cairns, as the path can be easy to lose.

This historic trail is notable for its journey into and out of several canyons, including the particularly stunning Mamie Creek. Here, you will find tall pines and riparian grasses, offering a contrast to the surrounding desert. The route provides a deep immersion into the stark beauty and solitude of the Grand Staircase-Escalante National Monument.

Last updated: April 23, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Phipps-Death Hollow Outstanding Natural Area

Waypoints

A

Start point

Parking

Get Directions

1

8.33 km

Boulder Mail Trail

Highlight (Segment) • Trail

Before the existence of UT-12 (in the 1930s) this was the route to travel between Escalate and Boulder. Today, travelling between those two places is way easier, and the trail became a famous hiking route through the rocky terrain.

Tip by

2

12.8 km

Mamie Creek Natural Bridge

Highlight • Natural Monument

From where the trail between Boulder Mail Trail and Mamie Creek Natural Bridge Trail splits, it's less than one mile until you reach this highlight. After the walk through Mamie Creek's riverbed, you'll get to the natural bridge and can enjoy this amazing geological landmark.

Tip by

B

25.7 km

End point

Parking

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Way Types & Surfaces

Way Types

20.0 km

2.95 km

2.27 km

289 m

125 m

Surfaces

25.3 km

289 m

125 m

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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 (2,060 m)

Lowest point (1,730 m)

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Weather

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Today

Thursday 7 May

23°C

3°C

0 %

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 the Boulder Mail Trail?

While a very fit hiker might complete the entire 16-mile (25.7 km) route as a long day hike, it's generally considered a difficult undertaking. Many hikers prefer to break it into an overnight or two-night backpacking trip to fully appreciate the scenery and manage the challenging terrain. The estimated moving time is around 7.6 hours, but this doesn't account for breaks, navigation, or enjoying the views.

What is the terrain like on this route?

The terrain is incredibly diverse and challenging. You'll encounter everything from juniper forests and sandy stretches to vast expanses of slickrock. The route involves significant elevation changes as it descends into and climbs out of several canyons, including Sand Creek, Death Hollow, and Mamie Creek. Expect steep slickrock sections, zigzagging switchbacks, and even walking directly in streambeds in places like Death Hollow, making wet feet unavoidable. You'll also cross wide, white plateaus and dunes of bleached rock.

Do I need a permit to hike the Boulder Mail Trail?

Yes, permits are required for hiking the Boulder Mail Trail, as it is located within the Grand Staircase-Escalante National Monument. It's essential to secure your permit in advance to ensure a smooth and legal trip. Check the official Grand Staircase-Escalante National Monument website for the most current information on how to obtain permits.

Is the Boulder Mail Trail dog-friendly?

As the trail is located within the Grand Staircase-Escalante National Monument, dogs are generally allowed but must be kept on a leash at all times. Please be aware that the rugged terrain, potential for extreme temperatures, and lack of reliable water sources can make this a challenging hike for dogs. Always pack enough water for your pet and be mindful of their paws on hot slickrock.

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

The best times to hike are typically spring (April-May) and fall (September-October) when temperatures are more moderate. Summer can be extremely hot, making the exposed sections very challenging, while winter can bring snow and ice, especially in higher elevations and shaded canyons, adding to the difficulty. Always check weather forecasts before you go.

What are the notable features and highlights along the way?

Beyond the stunning desert landscapes, the trail is rich in history. You can still spot remnants of the old telegraph line, a tangible link to its past as a crucial mail route. Key natural highlights include the 'oasis of life' in Death Hollow with its perennial water, lush vegetation, and dramatic cliffs, and the picturesque Mamie Creek Natural Bridge. The entire Boulder Mail Trail itself is considered a classic of the Colorado Plateau.

What should I know about Grand Staircase-Escalante National Monument regulations?

As part of a National Monument, hikers must adhere to Leave No Trace principles. This includes packing out all trash, staying on designated trails where possible, and respecting wildlife. Permits are required for overnight stays and some day hikes. There are no entrance fees for the Monument itself, but specific activities or areas might require permits. Always check the official Monument website for the latest regulations and any fire restrictions.

Is this trail suitable for beginners?

No, the Boulder Mail Trail is generally classified as moderate to difficult and is not recommended for beginners. It demands good physical fitness, experience with backpacking or challenging day hikes, and strong navigation skills, especially on slickrock sections where cairns mark the way. The steep ascents and descents into canyons are particularly challenging.

Where does the trail start and is there parking available?

The Boulder Mail Trail is typically hiked as a point-to-point route between the towns of Boulder and Escalante, Utah. There are trailheads at both ends. Parking is available at these trailheads, but given the point-to-point nature, hikers often arrange for a shuttle or a car drop-off/pickup at either end. It's advisable to research specific trailhead locations and parking availability before your trip.

Does the trail intersect other well-known paths?

Yes, while the route primarily follows the Boulder Mail Trail (84% of the route), it also passes through sections of the Mamie Creek Natural Bridge Trail (11%) and briefly touches on the Old Highway Road (4%) and the Escalante River Trail (4%). These intersections are generally well-marked or intuitive within the context of the main route.

What are some specific challenges or 'insider tips' for hiking this route?

Be prepared for significant navigation challenges on slickrock sections; cairns are crucial, but can be sparse or hard to spot. In Death Hollow, expect to walk in the streambed and be aware of prevalent poison ivy. Water sources are limited and often seasonal outside of Death Hollow, so carry ample water. Consider hiking it as an overnight trip to avoid rushing and to better manage the strenuous canyon crossings. Always carry a detailed map and GPS device.

What kind of wildlife might I see on the Boulder Mail Trail?

The desert environment supports a variety of wildlife, though many animals are nocturnal or shy. You might spot mule deer, various species of lizards, snakes (including rattlesnakes, so watch your step), and a wide array of birds, especially near water sources like Death Hollow. Keep an eye out for raptors soaring overhead. Always observe wildlife from a distance and never feed them.

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