3.4
(13)
97
riders
02:38
22.3km
820m
Mountain biking
Experience a moderate 13.9-mile mountain bike ride on the Lower Monroe Truck Trail, known for its sustained climb and long descent.
Last updated: February 26, 2026
Tips
Includes a very steep uphill segment
You may need to push your bike.
After 4.19 km for 322 m
Waypoints
Start point
Get Directions
3.70 km
Highlight • Viewpoint
Tip by
12.4 km
Highlight (Segment) • Trail
Tip by
22.3 km
End point
Way Types & Surfaces
Way Types
16.2 km
4.01 km
2.15 km
Surfaces
16.2 km
3.09 km
2.15 km
920 m
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Elevation
Highest point (1,040 m)
Lowest point (350 m)
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Weather
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Today
Wednesday 6 May
21°C
6°C
0 %
Additional weather tips
Max wind speed: 12.0 km/h
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This route was planned by komoot.
The Lower Monroe Truck Trail typically starts near the bottom of the canyon in Glendora. Parking is usually available along the street near the trailhead. Many riders also opt for a shuttle service to the top of Glendora Mountain Road to focus solely on the extensive downhill ride.
This route is generally rated as moderate for mountain biking. The climb, while long (about 6-8 miles), is steady rather than extremely steep, though it's physically demanding. The downhill section is fast-paced and can be compared to a 'crazy fun blue trail,' but it features rocky and rutted sections that require attentiveness.
The trail begins with a roughly 1.7-mile 'rock garden creek' section that is bumpy and twisty, with both doubletrack and narrower singletrack. After this, it transitions to a steady, gradual 6.2-mile climb, mostly on doubletrack. The descent retraces this path, offering a fast ride that can be rocky and rutted, with loose rocks in the bottom section and characteristic Southern California dirt and sand elsewhere.
Riders can enjoy amazing views of the San Gabriel Valley and south towards Orange County from a plateau about 3.3 miles into the climb. This spot, often called an 'appreciation station,' is a popular rest stop. The trail continues to offer great scenery as it ascends along the mountainsides. You'll pass by the View of Glendora highlight.
Yes, dogs are generally allowed on the Lower Monroe Truck Trail. However, it's always best to keep them on a leash, especially in shared-use areas, and be mindful of other trail users, particularly mountain bikers on the downhill sections.
Spring and fall offer the most pleasant riding conditions with milder temperatures. Due to limited tree cover, the trail can get very hot during summer months, making early morning rides essential if visiting then. Winter can also be a good time, but be aware of potential rain and cooler temperatures.
The Lower Monroe Truck Trail is located within the Angeles National Forest. While there are no specific permits required for riding the trail itself, a National Forest Adventure Pass may be required for parking in certain areas within the forest. It's advisable to check the latest regulations before your visit.
Yes, the route primarily follows the Lower Monroe Truck Trail, but sections of the route also pass through the Lower Monroe Trail and the Punk Out Trail.
Given the trail's exposure to the sun and length, it's crucial to bring plenty of water, especially during warmer months. Full-finger gloves are recommended to protect against thorny vegetation. Sunscreen, a helmet, and basic bike repair tools are also essential.
Yes, the Lower Monroe Truck Trail is renowned for providing one of the longest descents in Southern California. After a sustained climb, the return journey offers an extensive, fast-paced downhill experience.
The trail has limited tree cover, leading to significant sun exposure and heat, especially in summer. The downhill sections can be rocky and rutted, requiring careful attention. Also, the lower sections are shared with pedestrians, so caution is advised during descents.