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Routes
Mountain biking trails
United States
California
Los Angeles County
Monrovia

Mt. Wilson Enduro Loop

Hard

5.0

(2678)

16,165

riders

Mt. Wilson Enduro Loop

07:11

56.2km

2,170m

Mountain biking

The Mt. Wilson Enduro Loop is a difficult 34.9-mile mountain biking trail in Angeles National Forest with 7127 feet of elevation gain.

Last updated: February 26, 2026

Tips

Includes a very steep uphill segment

You may need to push your bike.

After 7.59 km for 429 m

Waypoints

A

Start point

Parking

Get Directions

1

42.7 km

Mt. Wilson Trail

Highlight (Segment) • Trail

The Mt. Wilson Trail is an epic downhill trail that will put a smile on your face, I promise!

Tip by

B

56.2 km

End point

Parking

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Way Types & Surfaces

Way Types

25.3 km

16.8 km

6.58 km

3.82 km

3.61 km

111 m

Surfaces

19.1 km

13.5 km

8.89 km

6.96 km

5.77 km

1.92 km

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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 (1,720 m)

Lowest point (150 m)

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Weather

Powered by Foreca

Today

Sunday 10 May

29°C

13°C

0 %

Additional weather tips

Max wind speed: 15.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Is the Mt. Wilson Enduro Loop suitable for beginners?

No, this loop is considered an advanced to expert-level mountain bike trail. It demands very good fitness and advanced riding skills due to its challenging terrain, technical difficulty, and significant 5,000-foot vertical descent. Riders should be prepared for dangerous exposure and tight switchbacks.

What kind of terrain can I expect on this ride?

The terrain is diverse and demanding. The upper sections feature narrow paths, numerous switchbacks, loose rocks, and dirt, with potential washed-out areas and boulders. As you descend, the loose rock transitions to more solid, bumpy terrain. The lower parts smooth out, offering better flow, though some sections still have ruts and small jumps. It's a mix of singletrack, unpaved roads, and some paved segments. The decomposed granite composition means it can be tackier and more enjoyable after rain.

Where can I park and access the trailhead for this loop?

The Mt. Wilson Enduro Loop is most commonly ridden as a shuttle run. Services are often available from the JPL parking lot, which serves as a popular access point for shuttling to the summit. While climbing to the top is possible, it's a long and strenuous endeavor.

Do I need any permits or pay entrance fees to ride in Angeles National Forest?

Generally, a Forest Adventure Pass is required for parking at many trailheads within the Angeles National Forest. It's always best to check the official Angeles National Forest website for the most current information on permits and fees before your visit.

What is the best time of year to ride the Mt. Wilson Enduro Loop?

The trail can be ridden year-round, but conditions vary. After rain, the decomposed granite terrain becomes tackier and more enjoyable. Be aware that weather and temperature conditions can differ dramatically from the cold and windy summit to the warmer base. Always check the forecast before heading out.

What are the notable viewpoints or landmarks along the route?

Riders are treated to spectacular vistas and stunning views throughout the ride, including panoramic views of Los Angeles from higher elevations. The Mt. Wilson Trail itself offers incredible scenery, and the Mt. Wilson Observatory sits at the peak, providing a significant landmark.

Is the Mt. Wilson Enduro Loop dog-friendly?

While dogs are generally allowed on trails in the Angeles National Forest, this specific trail is an advanced mountain biking route. Due to the technical difficulty, high speeds, and potential for busy lower sections with hikers, it is not recommended for dogs, especially off-leash.

What safety gear is recommended for this challenging ride?

Given the extreme difficulty and technical nature of the descent, it is strongly advised to wear a full-face helmet, elbow pads, and knee pads for protection. The trail features dangerous exposure and 'super sketchy' sections where extra protection is crucial.

Does this route intersect with other trails?

Yes, the route intersects with several other trails. You'll encounter sections of the Rincon Red Box Truck Trail, Mount Wilson Toll Road, Mount Wilson Trail, Rim Trail, Van Tassel Motorway, and the Monrovia Canyon Truck Trail, among others.

What's an insider tip for riding the Mt. Wilson Enduro Loop?

Consider riding after a light rain. The decomposed granite composition of the trail means it becomes tackier and offers better grip, making the challenging descent more enjoyable and less prone to loose conditions. Also, be aware that the lower sections can be busy with hikers, especially on weekends, so ride considerately.

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