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San Bernardino County

San Bernadino Mountains

The best MTB trails in the San Bernadino Mountains

4.7

(13)

453

riders

45

rides

Mountain biking in the San Bernardino Mountains offers diverse landscapes and significant elevation changes across its 800,000 acres, primarily within the San Bernardino National Forest. The region features ecosystems ranging from chaparral and oak woodlands to mixed conifer forests and alpine meadows. Rugged terrain, scenic lakes like Big Bear Lake, and river canyons provide varied settings for mountain bike trails. This area is characterized by its extensive network of trails catering to different skill levels.

Best mountain bike trails in…

Last updated: May 12, 2026

1

riders

#1.

Clark's Grade to Big Bear

28.9km

03:08

1,020m

690m

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…

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Hard

5.0

(4)

50

riders

36.3km

03:31

650m

650m

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…

Hard
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10

riders

13.4km

01:17

390m

390m

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…

Moderate

4.0

(1)

10

riders

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…

Moderate

Prepare for a demanding mountain biking adventure on the Santa Ana River Trail loop (Post Office Section). This difficult route spans 20.7 miles (33.3 km) and climbs 3576 feet (1090…

Hard

1

riders

44.0km

03:55

1,370m

1,370m

If you are seeking a difficult mountain biking challenge, the Big Gravel Loop offers a substantial workout over 27.3 miles (44.0 km). You will gain 4495 feet (1370 metres) of…

Hard

3

riders

Embark on a moderate mountain biking adventure up Bertha Peak via Cougar Crest Trail. This route takes you through diverse pine and oak forests, gradually revealing expansive views of Big…

Moderate
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Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate

1

riders

17.3km

01:42

450m

450m

Embark on the Crafton Hills Loop for a moderate mountain biking adventure spanning 10.7 miles (17.3 km) with a total elevation gain of 1484 feet (452 metres). You'll navigate a…

Moderate

Get ready for a moderate mountain biking adventure on the Three Hawks and Thunderbird Trail Loop. This route covers 2.5 miles (4.0 km) and includes a total elevation gain of…

Moderate
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Tips from the Community

Quentin
October 1, 2025, Bertha Peak

Cool views

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Alex
December 26, 2023, Snow Summit

Snow Summit, built in 1952, is near Big Bear Lake and its sister resort, Bear Mountain. During the winter, it is a popular resort for skiers and snowboarders, but in the summer months of May to October, Snow Summit has a gravity-fed bike park. Bikers have access to 60 miles of cross-country trails.

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Zachary
September 21, 2023, Clark's Summit

From here you can take Clark's Grade down the mountain toward Clark's Ranch Yellow Post Site or head over to Bellyache Springs. The views are great from the summit and from the road, which is popular for mountain biking, hiking, and off-roading.

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Zachary
September 21, 2023, Clark's Grade junction

The viewpoint from this part of the trail is fantastic, and the trees are perfect for setting up a hammock. The trail north of here is nice, scenic singletrack.

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Zachary
September 21, 2023, Cold Creek Falls

If you are headed from or toward the Santa Ana Trail, this is a great spot to check out. The falls usually get a fair amount of water flow and make for a pretty stop.

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From here you can hike the Santa Ana trail east towards South Fork. This hike can be done as a loop, a multi-day hike, or a point-to-point with a shuttle ride. The trail has a number of camps along the way and is also a popular mountain biking route. The trail is shady and peaceful. The path east of here is quite flat which makes the trail enjoyable even in the hot summer.

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Zachary
September 21, 2023, Snow Summit

The ski resort here is quite popular in the winter, and the trails make Snow Summit a popular hiking and mountain biking destination in the summer. The peak rests at 8173 ft and looks out across Big Bear Lake to Gold, Bertha, and Delamar Mountains.

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Zachary
September 19, 2023, Cougar Crest Trailhead

If you park in the parking lot you need to purchase and display an Adventure Pass, but you may be able to park a short ways down the road without one. The best views from this trailhead are at Bertha Peak.

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Frequently Asked Questions

What types of mountain bike trails can I find in the San Bernardino Mountains?

The San Bernardino Mountains offer a diverse network of mountain bike trails catering to all skill levels. You'll find everything from easy, flowing paths to challenging routes with significant elevation changes. The terrain varies from chaparral and oak woodlands at lower elevations to mixed conifer forests and alpine meadows in higher reaches, providing a rich variety of riding experiences.

Are there any easy or family-friendly mountain bike trails in the San Bernardino Mountains?

Yes, there are several easy and moderate trails suitable for families and beginners. For example, the Three Hawks and Thunderbird Trail Loop is a moderate option that offers a good introduction to the area's riding. The region's diverse trail network ensures there are options for less experienced riders to enjoy the scenery.

What are some challenging mountain bike trails for experienced riders?

Experienced mountain bikers will find plenty of challenging routes. The Clark's Grade to Big Bear trail is a difficult 18-mile path featuring challenging climbs and descents through forested areas. Another demanding option is the Santa Ana River Trail loop (Post Office Section), which includes over 1000 meters of elevation gain.

Are there any mountain bike trails that offer scenic viewpoints or natural attractions?

Many trails in the San Bernardino Mountains provide stunning views and access to natural features. The Skyline Trail Loop is known for its extensive views across the varied mountain landscape. You can also find trails near picturesque lakes like Big Bear Lake, and the Bertha Peak via Cougar Crest Trail offers views towards Bertha Peak and Big Bear Lake.

Can I find loop trails for mountain biking in the San Bernardino Mountains?

Yes, the San Bernardino Mountains feature several excellent loop trails. The Skyline Trail Loop is a popular 22.6-mile difficult route. For a longer, more challenging ride, consider the Big Gravel Loop, which covers nearly 44 kilometers with significant elevation changes.

What is the best time of year to go mountain biking in the San Bernardino Mountains?

The San Bernardino Mountains offer diverse climates due to their elevation. While lower elevations can be ridden year-round, higher areas are best enjoyed from late spring through fall. Snow-capped peaks are common in winter, especially on Mount San Gorgonio, which can affect trail accessibility at higher altitudes. Always check local conditions before heading out.

Are there any permits required for mountain biking in the San Bernardino National Forest?

Mountain biking in the San Bernardino National Forest generally does not require specific permits for trail use, but it's always advisable to check the official San Bernardino National Forest website for the most current regulations, especially concerning specific wilderness areas or fire restrictions. Some areas might require an Adventure Pass for parking.

What do other mountain bikers say about the trails in the San Bernardino Mountains?

The mountain bike trails in the San Bernardino Mountains are highly rated by the komoot community, with an average score of 4.9 stars from 11 reviews. Riders frequently praise the diverse landscapes, from mixed conifer forests to scenic lake views, and the varied terrain that offers options for all ability levels.

Are there any nearby attractions or points of interest to explore after a ride?

Absolutely. The San Bernardino Mountains are rich with natural attractions. You can visit Big Bear Lake or explore the Wooden path Stanfield Marsh. For panoramic views, consider visiting Vista from second peal Warren peak or Awesome views of Big Bear Lake. The region also features several prominent peaks like Bertha Peak and Warren Peak.

How many mountain bike trails are available in the San Bernardino Mountains?

There are over 40 mountain bike trails documented in the San Bernardino Mountains on komoot, offering a wide range of experiences. These include 3 easy, 31 moderate, and 11 difficult routes, ensuring options for every skill level.

Are there any trails along the Santa Ana River?

Yes, the Santa Ana River Canyon cuts through the southern part of the range, and the Santa Ana River Trail offers scenic routes. The Santa Ana River Trail – San Bernardino National Forest is a moderate 21-kilometer ride that follows the river, providing beautiful scenery.

Most popular routes in the San Bernadino Mountains

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