4.9
(3076)
15,972
riders
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
Start point
Get Directions
5 m
Highlight • Trail
Tip by
881 m
Highlight • Waterfall
Tip by
15.0 km
Highlight • Trail
Tip by
18.1 km
Highlight • Summit
Tip by
28.1 km
Highlight • Rest Area
Tip by
28.9 km
End point
Parking
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
Highest point (2,420 m)
Lowest point (1,460 m)
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Weather
Powered by Foreca
Today
Saturday 11 July
29°C
15°C
0 %
Additional weather tips
Max wind speed: 12.0 km/h
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This route was planned by komoot.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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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