The best MTB trails in San Bernardino County

Embark on the challenging Clark's Grade to Big Bear mountain biking route, a difficult 18.0-mile (28.9 km) journey that demands a significant 3340 feet (1018 metres) of elevation gain. As you climb, you'll transition from the lush Santa Ana River canyon through semi-arid zones with mesquite and scrub oak, eventually reaching conifer groves. The route culminates near Big Bear Lake, offering panoramic vistas of Mount San Gorgonio and the surrounding ranges from its switchbacks, a rewarding sight after approximately 3 hours and 7 minutes of riding.

Your adventure begins at the Middle Control Road Trailhead. Be prepared for a steep dirt road that features loose rocky sections, deep ruts, and loose sand, which will test your traction and line choices. This route is best tackled when conditions are dry, allowing for a safer and more enjoyable experience on its demanding surfaces.

This historic route was once a vital toll road and stagecoach path, offering a unique connection to the past as you pedal. Reaching Clark's Summit provides a memorable view, marking a significant achievement on a trail known for its sustained uphill climb and diverse natural beauty.

Prepare for a challenging mountain bike ride up Monument Peak via Bailey Canyon Road. This difficult route covers 6.0 miles (9.6 km) and demands a significant climb of 3176 feet (968 metres), typically taking around 2 hours and 6 minutes to complete. As you ascend, you'll mostly follow forest service roads, which open up to expansive views of the landscape. The ridgeline offers scenic vistas, and from the summit of Monument Peak, you can look down upon San Bernardino and the Inland Empire.

Before you head out, be aware that Forest Road 2N43, which forms part of the route, has a significant washout. This means vehicles cannot pass, but you can still navigate it by bike or on foot. Expect to encounter sections with soft, sliding dirt and rocky terrain, so ensure your bike and skills are ready for these challenging conditions. Also, keep an eye out for

Embark on a moderate mountain biking adventure along Lower and Upper Covington Flat Road, a 9.6-mile (15.4 km) route in Joshua Tree National Park. You will climb 1394 feet (425 metres) over approximately 1 hour and 46 minutes, navigating unpaved dirt roads. The trail offers a distinct high desert experience, with the Upper Covington Flat section showcasing impressive Joshua trees, junipers, and pinyon pines. As you ascend, you will be treated to expansive views of Palm Springs and the surrounding mountains from near Eureka Peak. This ride provides varied terrain and an engaging experience for mountain bikers.

Before heading out, be aware that cell service is limited throughout the area, and there is no running water available on the trail itself, so plan accordingly. After rain or snow, sections of the road can become rutted and more challenging to ride. Always be prepared for varying conditions in Joshua Tree National Park, and carry enough supplies for your journey. Consider starting early to avoid the midday heat, especially during warmer months.

This route takes you through fascinating desert landscapes, where you can observe the unique ecosystem of Joshua Tree National Park. While some areas show signs of past wildfires, the resilience of the desert flora is evident. The ascent towards Eureka Peak, one of the park's highest points, offers a unique perspective on the vastness of the region. This trail is a great way to explore the park's less-traveled dirt roads and experience its natural beauty up close.

Baldy Mesa Road 3N21 offers a moderate mountain biking adventure, predominantly downhill, spanning 5.4 miles (8.8 km) with a gentle elevation gain of 122 feet (37 metres). You can expect to complete this ride in about 31 minutes. As you descend, the route contours the edge of Baldy Mesa, revealing constantly changing scenery. Look out for expansive views of the Cajon Pass and the majestic San Gabriel Mountains, including Mount Baldy. The trail surface is a fire road, so be prepared for sections with sand, loose terrain, and occasional rocky patches, especially after rain.

Before you head out, remember that Baldy Mesa Road 3N21 is a multi-use route. You will share the path with Off-Highway Vehicles and 4WD vehicles, so stay alert. Parking at staging areas might require an Adventure Pass or a similar permit; it's wise to check local regulations beforehand. For those planning a one-way downhill ride, a common endpoint is conveniently located near a McDonald's. If you need a ride back to the start, you can catch a bus from the Fontana train station, as many buses accommodate bikes.

This route is nestled within the San Bernardino National Forest, offering a unique perspective of the region's diverse landscape. The trail's position along Baldy Mesa provides an excellent vantage point to appreciate the vastness of the Cajon Pass and the prominent peaks of the San Gabriel range. It stands out as a accessible downhill mountain biking option in an area known for its rugged terrain.

Embark on the Skyline Trail Loop for a challenging mountain biking adventure through the San Bernardino Mountains. This difficult route spans 22.6 miles (36.3 km) and features a significant elevation gain of 2132 feet (650 metres), promising a rewarding ride for experienced cyclists. As you navigate the varied terrain, you will encounter engaging sections and enjoy a wonderful view of Big Bear Lake, providing a stunning backdrop to your journey.

Before you head out, plan for a ride lasting approximately 3 hours and 31 minutes. This trail is designed for those seeking a true challenge, so ensure you are well-prepared for a difficult experience. Parking is generally available near the trailhead, but it is always wise to check local conditions before your visit. Make sure your mountain bike is in top condition and you carry plenty of water and supplies for the entire duration of the ride.

The Skyline Trail Loop is a notable route within the San Bernardino National Forest, known for immersing riders in the diverse landscapes of the region. It incorporates sections of the popular Skyline Trail and the Plantation Trail, offering a dynamic and varied experience. This trail stands out for its combination of demanding physical effort and scenic rewards, making it a prime choice for serious mountain bikers in the area.

Embark on the Lower Aliso Canyon, Scully Ridge & Bane Ridge Loop, a moderate mountain biking route that takes you through the diverse landscapes of Chino Hills State Park. This 15.1-mile (24.4 km) journey involves a significant climb of 1587 feet (484 metres), offering expansive views across the park and Orange County. You can expect to complete the loop in about 2 hours and 22 minutes, riding through varied terrain that includes both singletrack and wider doubletrack. The trail winds through riparian zones and grasslands, providing a dynamic and engaging experience. Look for local wildlife and vibrant wildflowers, particularly from January to April when the park is at its greenest.

Since this route is located within Chino Hills State Park, be sure to familiarize yourself with the park's specific regulations before your visit. Good physical fitness is recommended to comfortably tackle the extensive climbing on this moderate loop. If you ride an e-bike, Class 1 e-bikes are permitted within the park, which can assist with the elevation gain. Plan your visit during cooler parts of the day, especially in warmer months, to make the most of your ride.

This loop offers a comprehensive mountain biking experience, combining significant climbing with enjoyable descents across its varied terrain. The route is notable for its highly scenic views, showcasing the natural beauty of Chino Hills State Park. You will traverse diverse habitats, providing a rich ecological experience. The mix of singletrack and doubletrack ensures a dynamic ride, keeping you engaged throughout the entire journey.

Get ready for a moderate mountain biking adventure on the Exploration Trail, covering 8.3 miles (13.4 km) with a challenging 1285 feet (392 metres) of elevation gain. You can expect to complete this route in about 1 hour and 16 minutes. As you ride, you'll navigate varied terrain, including rocky sections and steep pitches that wind through forested areas. Keep an eye out for huge boulders and Manzanita shrubs, which give the trail a classic Big Bear feel. You'll also be treated to fantastic views of the San Gabriel range and the Inland Valleys.

Before you head out, be aware that the trail can be covered in snow during the winter months, which significantly changes the riding experience. This route is popular for shuttling, allowing many riders to enjoy a predominantly downhill experience. Remember that it is a shared-use path, so always be mindful of hikers you might encounter. If you bring your dog along, please ensure they are kept on a leash for everyone's safety and enjoyment.

The Exploration Trail is nestled within the San Bernardino National Forest, offering a true mountain escape. Its winding path through diverse landscapes provides a great workout while immersing you in the natural beauty of the region. The combination of challenging climbs and rewarding views makes this a notable route for mountain bikers looking for an engaging ride in the area.

Embark on the Snow Summit Skyline and Going Green Loop for a moderate mountain biking adventure that spans 8.8 miles (14.2 km). You will gain 1220 feet (372 metres) in elevation, typically completed in about 1 hour and 23 minutes. This route offers a dynamic mix of terrain, from flowy singletrack with switchbacks to sections designed to help you develop your skills. As you climb, you'll be treated to expansive views, including the distant peak of Mount San Gorgonio. The descent on the Going Green sections provides pleasant vistas of Big Bear Lake, featuring berms, rollers, and small jumps.

Before you head out, understand that this moderate route combines parts of the Skyline Trail with the lift-served Going Green trail. While the Going Green sections are more beginner-friendly, the Skyline portions include challenging climbs and technical elements. Ensure your mountain biking experience aligns with these demands, as conditions can vary. Always check the Snow Summit Bike Park's operating hours and any specific requirements before your visit. Parking is generally available at the resort base, but it's wise to confirm details on their official website.

This loop is notable for its blend of natural singletrack and purpose-built bike park features, offering a comprehensive mountain biking experience. It allows you to enjoy the thrill of lift-served descents while also tackling some rewarding climbs. The trail is an excellent way to experience the diverse offerings of the Snow Summit Bike Park, from panoramic views to skill-building terrain. It stands out as a route that caters to riders looking to progress their abilities within a scenic mountain environment.