4.8
(5)
186
riders
13
rides
Mountain bike trails in South Hills Wilderness Area offer a diverse network within a semi-wilderness landscape of rolling hills and canyons. The region features varied plant communities, including chaparral and oak woodlands, providing a Mediterranean ecosystem for riders. Many trails are multi-use, catering to cross-country mountain biking with sections ranging from gentle to steep grades. Panoramic views are available from higher elevations and ridges, adding to the riding experience.
Last updated: July 10, 2026
11
riders
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
7
riders
80.2km
06:50
2,330m
2,330m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.

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10
riders
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
29
riders
22.3km
02:38
820m
820m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
26
riders
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
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Sometimes there's a good-sized pool of water in this basin; most of the time, though, it's a boggy sort of wetland. Either way it's home to an interesting riparian, sage scrub and southern oak habitat.
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You can cycle across the top of the dam, which was constructed in 1928 to help control flooding in the region. It stands at 147 feet high, and today supports a myriad of outdoor recreation activities on the reservoir.
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Mount Baldy Village & ski resort towers above the San Gabriel Valley & Los Angeles suburbs and is a lovely alpine community with a wonderful restaurant and a pub. It's a great place to stop, take in the incredible scenery, and refuel during your ride.
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Mount Baldy Village & ski resort towers above the San Gabriel Valley & Los Angeles suburbs and is a lovely alpine community with a wonderful restaurant and a pub. It's a great place to stop, take in the incredible scenery, and refuel during your ride.
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The Lower Monroe Truck Trail has a mix of terrain, starting with a flat, rocky doubletrack section that transitions into a gradual, twisty eight-mile climb up to Glendora Mountain Road. It starts with a 1.7-mile rock garden creek section; the trail features intermittent tree cover and narrows to singletrack in spots. After a sharp right turn, the trail climbs steadily for 6.2 miles, mostly exposed, with great views of the San Gabriel Valley at the 3.3-mile plateau, a popular rest point. At the top, a gate marks the turnaround for the fast-paced, twisting descent. Riders navigate rocky and rutted sections with trail-hugging vegetation, so gloves and water are essential. Be ready for the occasional pedestrian encounters, a cowbell comes in handy.
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At the junction of Lower Monroe Trail, Mystic Canyon Trail, and Lower Monroe Truck Trail is a great view over Glendora down in the south below.
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Great view of the Puddingstone Reservoir, a 250-acre man-made body of water. There is a road that runs along the perimeter of the reservoir and there is a spot to pull off the road to get a close up view of the water.
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Little Dalton Debris Basin is a small, man-made collecting pond in Big Dalton Canyon Wilderness Park. It is just off Big Dalton Canyon Road and Glendora Mountain road, which are both popular, challenging roads for biking.
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There are over 15 mountain bike trails in the South Hills Wilderness Area, offering a diverse network for riders. These trails cater to various skill levels, from easy to difficult.
The South Hills Wilderness Area features a semi-wilderness landscape of rolling hills and canyons. Riders will encounter diverse plant communities, including chaparral, coastal sage-scrub, and Southern Oak Woodlands, with majestic live oaks and sycamores. The trails are primarily cross-country, with sections ranging from gentle to steep grades.
Yes, the South Hills Wilderness Area offers several easy trails suitable for beginners. For example, the View of the valley β Little Dalton Debris Basin loop from Big Dalton Canyon Wilderness Park is an easy 6.2-mile route. Portions of trails like East View South Fork Trail, Alosta Canyon Trail, and North Spur Trail are also considered beginner-friendly.
Various points along the trails offer panoramic views, especially from ridges and higher elevations. Summit 1212 is noted for its expansive vistas. Routes like the View of the valley β Little Dalton Debris Basin loop from Glendora High School also provide scenic valley views.
Yes, many trails in the South Hills Wilderness Area are designed as loops. A popular moderate loop is the View of the valley β Little Dalton Debris Basin loop from Glendora High School, which is 9.6 miles long. Another option is the Puddingstone Reservoir Dam loop from Life Pacific University, a moderate 15.3-mile path that circles the reservoir.
The South Hills Wilderness Area is generally accessible year-round. However, the Mediterranean climate means summers can be hot. Spring and fall offer pleasant temperatures, making them ideal for riding. Winter riding is also possible, but always check weather conditions, especially after rain, as trails can become muddy.
Many trails in the South Hills Wilderness Area are multi-use and generally dog-friendly. However, it's always recommended to keep dogs on a leash and be mindful of other trail users, including hikers and equestrians. Always carry water for your dog, especially on warmer days.
Yes, there are family-friendly options. The area offers trails with varying difficulty levels, including easier sections suitable for families. The View of the valley β Little Dalton Debris Basin loop from Big Dalton Canyon Wilderness Park is an easy route that families might enjoy.
Accessible parking and trailheads are available at several locations. You can find parking at South Hills Park on Mauna Loa Ave. and also under the 210 Freeway on Bonnie Cove. Always check local signage for any specific parking regulations.
The area is highly rated by the komoot community, with an average score of 4.6 stars. Reviewers often praise the diverse network of trails, the varied terrain, and the panoramic views from higher elevations. The mix of chaparral and oak woodlands also contributes to a unique riding experience.
Yes, while many trails are moderate or easy, there are more challenging sections for experienced riders. Some trails, such as Los Cerritos Rd., feature steep grades. The Lower Monroe Truck Trail is a moderate route with significant elevation gain, offering a more demanding ride.
The South Hills Wilderness Area boasts a diverse range of plant communities, characteristic of a Mediterranean ecosystem. You'll encounter chaparral, coastal sage-scrub, and Southern Oak Woodlands. Majestic live oaks and sycamores also grace many of the routes, providing shade and scenic beauty.
The South Hills Wilderness Area is centrally located within Glendora, meaning there are various cafes, restaurants, and other amenities available in the surrounding urban areas. You'll find options for food and drink a short drive from the trailheads.


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