The best MTB trails around Monrovia

The Mt. Wilson Enduro Loop is a demanding mountain biking route near Los Angeles, famous for its extensive downhill sections and technical challenges. You'll encounter a mix of flowy singletrack and rock-strewn descents, with narrow passages and insane switchbacks that require sharp skills. The trail winds through dense forests and past rocky outcrops, offering spectacular panoramic views that stretch for miles, making the effort worthwhile for experienced riders.

Planning your ride means considering the significant 7127 feet (2172 metres) of elevation gain over 34.9 miles (56.2 km); many opt for a shuttle to the top to focus on the thrilling descent. The route is rated difficult and takes around 7 hours and 10 minutes, so start early. Be aware that portions can be overgrown or washed out, and you'll be sharing the trail with hikers, so ride with care.

This trail is a favorite among advanced mountain bikers for its

The Upper and Lower Winter Creek Trail Loop offers a challenging mountain biking experience through the Angeles National Forest, featuring a mix of packed dirt, decomposed rock, and technical sections. You'll navigate a great singletrack climb on the Upper Winter Creek Trail and tricky rock sections with switchback descents on the Lower Winter Creek Trail, passing unique historic cabins along the way. This moderate 5.4-mile (8.8 km) route includes 1388 feet (423 metres) of elevation gain and takes about 1 hour and 6 minutes, making it ideal for experienced riders seeking varied terrain.

Planning your ride on the Upper and Lower Winter Creek Trail Loop requires a bit of foresight, especially regarding parking at Chantry Flats, which can fill up quickly on weekends and requires an Adventure Pass. The trail sees heavy foot traffic from hikers, particularly on weekends, so be mindful and practice good trail etiquette. While shaded sections offer respite, always carry plenty of water, especially during warmer periods.

One of the most notable aspects of this route is the presence of numerous historic vacation cabins, many from the 1920s, nestled along the trail and accessible only by foot or bike. The ride culminates with the notorious "Cardiac Hill," a steep, exposed paved fire road (2N40) climb back to Chantry Flats, which is a significant test of endurance and a defining feature of the Upper and Lower Winter Creek Trail Loop mountain biking difficulty.

The Mount Wilson, Sturtevant, and Winter Creek Loop offers a truly rugged mountain biking experience through the San Gabriel Mountains, winding past historic cabins and the impressive Sturtevant Falls. You'll encounter varied terrain, from packed dirt and decomposed rock on the Winter Creek Trail to steep, exposed sections and even some paved fire road. The route culminates with panoramic views from the Mount Wilson Summit Viewpoint, making the challenging ascent worthwhile for those seeking a rewarding ride.

Planning your visit requires a bit of foresight; the Chantry Flats trailhead is popular, so arrive early to secure parking, and remember an Adventure Pass is mandatory. Be prepared for a difficult 12.8-mile (20.6 km) ride with 4252 feet (1296 metres) of elevation gain, which typically takes around 3 hours and 7 minutes. Always check for current trail closures, as sections have been affected by rain damage and past fires, leading to repairs and altered conditions.

This loop is notable for its blend of natural beauty and historical significance, incorporating parts of the old Mount Wilson Toll Road. It's a shared-use trail, so mountain bikers must exercise proper etiquette and yield to hikers. The technical challenges, including potential hike-a-bike sections on the Black Diamond-rated Winter Creek segment, demand considerable preparedness and endurance, making it a prime choice for advanced mountain biking enthusiasts in the San Gabriel Mountains.

The Lower Clamshell Truck Trail offers a diverse mountain biking adventure through the Monrovia Hillside Wilderness Preserve, blending wide fire roads with engaging singletrack. You'll navigate through canyons and encounter numerous steep, tight switchbacks that demand good control, especially on descents. The highlight is undoubtedly the Sunset Overlook, providing expansive views that can stretch all the way to downtown Los Angeles on a clear day, making this a rewarding ride for those who enjoy varied terrain.

To make the most of your ride, plan to access the trail near Ridgeside Drive, keeping in mind that parking might require a short walk to the trailhead. It's strongly advised to ride the 6.4 miles (10.2 km) route counterclockwise, starting near Canyon Park, to avoid inadvertently straying onto private land. This moderate trail, with its 1114 feet (340 metres) of elevation gain, typically takes about 1 hour and 10 minutes to complete, so an early start is often best.

This trail stands out in the region for its unique mix of terrain, offering both speed on fire roads and technical challenges on singletrack. It's a popular choice for mountain bikers in the Los Angeles County area, providing a solid workout and impressive vistas without being an all-day commitment. The dog-friendly nature of the trail also makes it a great option if you want to bring your leashed canine companion along for the ride.