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Mountain biking around Monrovia offers access to diverse terrain at the foot of the San Gabriel Mountains. The region features rugged peaks, deep canyons, and lush forests, providing a varied landscape for outdoor activities. Trails range from dirt and gravel roads to technical singletrack, with significant elevation gains. This area is part of the San Gabriel Mountains National Monument and the Angeles National Forest, ensuring extensive natural areas for exploration.
Last updated: May 11, 2026
56.2km
07:11
2,170m
2,170m
The Mt. Wilson Enduro Loop is a difficult 34.9-mile mountain biking trail in Angeles National Forest with 7127 feet of elevation gain.
8.76km
01:07
420m
430m
The Upper and Lower Winter Creek Trail Loop offers a challenging 5.4-mile mountain bike ride with 1388 feet of gain through Angeles National

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1
riders
20.6km
03:07
1,300m
1,300m
This difficult 12.8-mile mountain biking loop in Angeles National Forest offers technical terrain, 4252 feet of gain, and observatory views.
1
riders
10.2km
01:11
340m
340m
Explore the moderate Lower Clamshell Truck Trail in Monrovia Hillside Wilderness Preserve, a 6.4-mile mountain biking route with scenic view
6
riders
12.3km
01:13
370m
370m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
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Mostly smooth fire road through Monrovia Hillside Wilderness, but with some steep and technical sections that might challenge beginners. Ride counterclockwise from Canyon Park and follow the signsβmany side trails cross private land. The descent includes tight switchbacks and a short singletrack section. You can stick to the main road or take the βadvancedβ trail, Cactus Road, for more climbs, exposure, and a fun technical finish.
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Explore the looped road around the summit of Mount Wilson, a prominent peak known for its historic Mount Wilson Observatory. The summit houses telescopes, solar towers, and the modern CHARA Array for stellar research. Standing at 5,710 feet, Mount Wilson offers sweeping views of the Los Angeles Basin, the Pacific Ocean, and the Channel Islands on clear days. This site also serves as a major broadcast hub for the Greater Los Angeles area, easy to see with the numerous antennas and relay facilities sticking out all over the summit.
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Chantrey Flats is the natural end for those riding the Sturtevant Trail. If you shuttled to Mt. Wilson with a friend then this is likely the end of the line for you. Others might need to ride back down to Altadena if they took the shuttle offered by SCOAoutdoors.net. And still others might be climbing their way back up to the top via the myriad of roads and trails that depart from this picnic area.
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Sturtevant Trail is one of the most diverse bits of trail in the San Gabriel Mountains. On the way down you'll encounter technical loose switchbacks, flowy sections, rock gardens, decomposed granite, and plenty of roots. Beware that this is a multi-use trail and can be busy with hikers, especially on weekends. Early mornings are the best time to ride, but always watch your speed, particularly around blind corners.
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Mount Wilson is a 5,710-foot summit in San Gabriel Mountains. It's easy to distinguish from the other tall peaks around this area due to how many antennas is has near the top of the mountain. They don't interrupt your views once you're up here, though.
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Mount Wilson has a summit at 5,710 feet. It's easier to distance from a distance because of the large number of antennas near its summit. These are utilized for the relay broadcasting of radio and television in the Greater Los Angeles Area. It's a popular hiking spot, so it can get busy on weekends.
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A great singletrack climb! Continue with Lower Winter Creek Trail to get back to the Parking Lot at Chantry. This is a fun loop with some tricky rock sections.
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The Mt. Wilson Trail is an epic downhill trail that will put a smile on your face, I promise!
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There are several mountain bike trails around Monrovia, with komoot listing 8 distinct routes. These trails offer a variety of experiences, from moderate climbs to challenging enduro loops, all set against the backdrop of the San Gabriel Mountains.
The mountain biking trails around Monrovia cater to a range of skill levels. You'll find 5 moderate routes and 3 difficult routes. For instance, the Mt. Wilson Enduro Loop is a challenging 34.9-mile ride with substantial elevation gain, while the Lower Clamshell Truck Trail offers a moderate 6.4-mile experience through Monrovia Canyon Park.
Yes, for a more family-friendly option, consider the Lower Clamshell Truck Trail in Monrovia Canyon Park. This moderate 6.4-mile trail offers a pleasant ride through diverse terrain, suitable for those looking for a less strenuous outing. Monrovia Canyon Park itself features picnic spots and is a great place for outdoor activities.
The terrain around Monrovia is diverse, ranging from dirt and gravel roads to technical singletrack sections. You'll encounter significant elevation changes as you ride through rugged peaks, deep canyons, and lush forests, particularly within the San Gabriel Mountains National Monument and Angeles National Forest areas.
Yes, several routes are designed as loops. A notable option is the Upper and Lower Winter Creek Trail Loop, an 8.7 km moderate ride. For a more challenging experience, the Mount Wilson, Sturtevant, and Winter Creek Loop is a difficult 12.8-mile path known for its technical sections and observatory views.
The region offers stunning views. The Mount Wilson, Sturtevant, and Winter Creek Loop provides views towards the Mount Wilson Observatory. You can also find highlights like Inspiration Point and San Gabriel Canyon Road Scenic View, offering panoramic vistas of the San Gabriel Mountains and surrounding valleys.
Yes, the area is home to beautiful waterfalls. Monrovia Canyon Falls is a picturesque natural landmark accessible via a moderate hike within Monrovia Canyon Park. Other nearby waterfalls include Eaton Canyon Waterfall and Sturtevant Falls, offering refreshing stops during your outdoor adventures.
The mountain bike trails around Monrovia are highly rated by the komoot community, with an average score of 5.0 stars. Reviewers often praise the diverse terrain, from challenging enduro loops to scenic forest trails, and the stunning backdrop of the San Gabriel Mountains.
While specific parking details for each trailhead are best checked locally, areas like Monrovia Canyon Park, which hosts trails such as the Lower Clamshell Truck Trail, typically offer designated parking facilities for visitors accessing the park and its trails.
Monrovia's location at the foot of the San Gabriel Mountains means that while the trails are in natural areas, the city itself offers various amenities. You'll find cafes and dining options in Monrovia for pre-ride fuel or post-ride recovery, though specific recommendations would depend on your exact trail starting point.
Monrovia generally offers good conditions for mountain biking for much of the year due to Southern California's climate. However, spring and fall often provide the most comfortable temperatures for riding. Summers can be hot, especially at lower elevations, while winter might bring cooler temperatures and occasional rain, which can affect trail conditions.
While popular trails like the Mt. Wilson loops can see more traffic, exploring some of the moderate routes, especially on weekdays, might offer a quieter experience. Trails within Monrovia Canyon Park, such as the Lower Clamshell Truck Trail, can provide a more serene ride compared to the more challenging and well-known enduro routes.


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