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Routes
Mountain biking trails
United States
California
Los Angeles County
San Gabriel Mountains National Monument

Mount Gleason Loop

Hard

2.5

(6)

93

riders

Mount Gleason Loop

05:36

58.6km

1,640m

Mountain biking

Conquer the difficult 36.4-mile Mount Gleason Loop mountain biking trail in Angeles National Forest, climbing 5371 feet for expansive views.

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Angeles National Forest

Waypoints

A

Start point

Parking

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1

15.1 km

Mount Gleason

Highlight • Summit

Gorgeous vista, prone to high winds.

Tip by

2

18.0 km

Messengers Flat Campground

Highlight • Rest Area

A small inviting campground with ten campsites each equipped with picnic table and campfire ring. There are vault toilets, but no water. For camping, you need the Adventure Pass/America the Beautiful Pass.

Tip by

B

58.6 km

End point

Parking

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Way Types & Surfaces

Way Types

58.6 km

< 100 m

Surfaces

28.1 km

23.8 km

4.51 km

2.14 km

< 100 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 (1,980 m)

Lowest point (930 m)

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Weather

Powered by Foreca

Today

Sunday 5 July

27°C

17°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

What is the difficulty level of the Mount Gleason Loop mountain biking trail?

The Mount Gleason Loop is generally considered an intermediate mountain bike route with a 'Blue' difficulty rating. However, be prepared for a physically challenging ascent, as the route involves a substantial climb of 1,957 feet to a maximum elevation of 6,411 feet. While some sections might be less technical, the overall physical demand is high.

What kind of terrain can I expect on this route?

You'll encounter varied terrain on the Mount Gleason Loop. Expect sections of 'busted pavement' and dirt trails. The route is also suitable for gravel bikes, indicating a mix of surfaces. Be ready for both climbs and descents typical of intermediate mountain biking trails.

Is the Mount Gleason Loop a true loop trail?

While the name suggests a loop, the route is often described as a point-to-point trail. However, the komoot route provided is indeed a loop, starting and ending at the same general area, covering a distance of approximately 58.6 kilometers.

What kind of views can I expect along the route?

Prepare for expansive and highly scenic views. From the summit of Mount Gleason South, you can often enjoy 'unlimited visibility'. Videos of rides in the area frequently depict 'Riding on Clouds' within the Angeles National Forest, promising breathtaking scenery.

Are there any specific landmarks or points of interest on the Mount Gleason Loop?

Yes, a key landmark is the summit of Mount Gleason itself, offering incredible views. You'll also pass by Messengers Flat Campground, which can be a useful spot for facilities.

Where can I park to access the Mount Gleason Loop?

Specific parking details are not provided in the available data, but given its location within Angeles National Forest, you would typically look for designated parking areas near the trailhead. It's advisable to check local forest service maps or recent trail reports for the most current parking information.

Do I need a permit or pay an entrance fee for the Mount Gleason Loop?

The Mount Gleason Loop is located within the Angeles National Forest. While there isn't a specific permit required for mountain biking the trail itself, you might need a National Forest Adventure Pass for parking at certain trailheads within the Angeles National Forest. It's best to check the official Angeles National Forest website for current regulations regarding passes and fees.

Is this route suitable for dogs?

Generally, dogs are allowed on trails within the Angeles National Forest, but they must be kept on a leash. Always practice Leave No Trace principles, including packing out all pet waste. Check specific forest regulations for any areas with stricter rules.

When is the best time of year to ride the Mount Gleason Loop?

The best time to ride this route is typically during the spring and fall when temperatures are milder. Summer can be very hot, especially at lower elevations, and winter may bring snow to higher parts of the trail, making it impassable or requiring specialized gear. Always check weather conditions before heading out.

Does the route connect with other trails?

Yes, the Mount Gleason Loop intersects with several other trails. Notable sections include the PCT - California Section D, Mount Gleason Road, Bear Trap Canyon Road, and the Pacific Crest National Scenic Trail #2000. You'll also encounter parts of Moody Canyon Truck Trail and BP & L Road.

Is the Mount Gleason Loop suitable for bikepacking?

Yes, the Mount Gleason Loop is considered suitable for bikepacking. Its length and location within the Angeles National Forest make it a good option for multi-day cycling adventures, allowing you to carry your gear and potentially camp along the way (where permitted).

What should I know about mountain biking in Angeles National Forest?

When mountain biking in Angeles National Forest, always be prepared for varying conditions and remote areas. Carry plenty of water, navigation tools, and emergency supplies. Be aware of wildlife, and respect all trail rules and regulations. A National Forest Adventure Pass may be required for parking at some trailheads. Always check the forest's official website for current alerts, closures, and fire restrictions before your ride.

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