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Routes
Mountain biking trails
United States
California
San Bernardino County

Clark's Grade to Big Bear

Hard

4.9

(3076)

15,972

riders

Clark's Grade to Big Bear

03:08

28.9km

1,020m

Mountain biking

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…

Last updated: April 23, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Waypoints

A

Start point

Get Directions

1

5 m

Middle Control Road Trailhead

Highlight • Trail

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 …

Tip by

2

881 m

Cold Creek Falls

Highlight • Waterfall

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.

Tip by

3

15.0 km

Clark's Grade junction

Highlight • Trail

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.

Tip by

4

18.1 km

Clark's Summit

Highlight • 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 …

Tip by

5

28.1 km

Aspen Glen Picnic Area

Highlight • Rest Area

The picnic area is a popular trailhead for hiking up to Skyline Ridge and Grand View Point. You can get to the Cabin 89 Trail and Pine Knot Trails from …

Tip by

B

28.9 km

End point

Parking

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Way Types & Surfaces

Way Types

18.1 km

8.20 km

2.41 km

142 m

< 100 m

< 100 m

Surfaces

23.4 km

2.62 km

2.58 km

313 m

< 100 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (2,420 m)

Lowest point (1,460 m)

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Weather

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Today

Saturday 11 July

29°C

15°C

0 %

Additional weather tips

Max wind speed: 12.0 km/h

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Frequently Asked Questions

Is Clark's Grade to Big Bear suitable for beginner mountain bikers?

No, this trail is consistently rated as difficult and is considered a 'Cat HC climb,' the most difficult rating. It features steep grades, loose sand, rocky sections, and deep ruts, making it unsuitable for beginners. Riders should have advanced mountain biking skills and excellent physical fitness.

What is the terrain like on the Clark's Grade trail?

The trail is primarily a steep dirt road, approximately 7.5 miles long, characterized by loose rocky sections and deep ruts. You'll encounter grades of 8% and above, with switchbacks frequently reaching 10-14% grade, often compounded by loose sand. The path starts relatively easy but quickly becomes more demanding.

What can I see along the route?

The trail offers astounding views from its switchbacks, including panoramic vistas of Mount San Gorgonio. Notable points along the way include the Middle Control Road Trailhead, Cold Creek Falls, the Clark's Grade junction, and Clark's Summit. You'll also pass the Aspen Glen Picnic Area near the end.

What is the best time of year to mountain bike Clark's Grade to Big Bear?

While specific seasonal recommendations aren't provided, given the trail's elevation and location in the San Bernardino National Forest, spring and fall generally offer the most pleasant conditions. Summers can be hot, and winters may bring snow at higher elevations, impacting trail accessibility and conditions.

Where is the trailhead for Clark's Grade to Big Bear and what are the parking options?

The route begins at the Middle Control Road Trailhead. Specific parking details are not provided, but trailheads in the San Bernardino National Forest typically have designated parking areas. It's advisable to check local forest service websites for current parking regulations and availability.

Do I need any permits or pay entrance fees to access this trail in the San Bernardino National Forest?

Accessing trails within the San Bernardino National Forest often requires a Adventure Pass for parking at certain trailheads. While specific fees for Clark's Grade are not listed, it's best to check the official San Bernardino National Forest website or local ranger stations for current permit requirements before your visit.

Is Clark's Grade to Big Bear dog-friendly?

The San Bernardino National Forest generally allows dogs on trails, but they must be kept on a leash. Given the challenging nature of this trail, ensure your dog is fit enough for the strenuous climb and loose terrain. Always pack enough water for both yourself and your pet.

Does the route connect with other trails in the Big Bear area?

Yes, the route connects to other popular mountain biking routes in the Big Bear area. It passes through sections of the Skyline Trail (21%), Santa Ana River Trail (9%), and Lakeview Loop (3%). It's also part of routes like the Big Bear Great Southern Loop, offering options for longer and more varied rides.

Does the Clark's Grade trail have any historical significance?

Yes, the trail has a rich history. Originally established in the 1880s as a toll road for livestock, it later became a stagecoach route in 1899. It served as the shortest and fastest way to reach the Big Bear area, adding a unique historical dimension to your ride.

What should I bring for a mountain bike ride on Clark's Grade?

Given the trail's difficulty and length (~29 km, ~3 hours), you should bring plenty of water, snacks, a repair kit for your bike, appropriate safety gear (helmet, gloves), and sun protection. Due to the challenging terrain, consider bringing extra tubes or a tubeless repair kit. A map or GPS device is also recommended.

Is Clark's Grade to Big Bear a loop trail or an out-and-back?

The Komoot tour for "Clark's Grade to Big Bear" is a point-to-point route, not a loop. It covers approximately 28.9 km with a significant elevation gain, ending near Big Bear. You would need to arrange for a shuttle or plan a return route if you don't want to ride back down.

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Clark's Grade to Big Bear

03:08h

28.9km

1,020m

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