4.6
(8424)
17,835
riders
03:55
44.0km
1,370m
Mountain biking
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 elevation, with an estimated duration of 3 hours and 54 minutes. The route takes you through varied terrain, from gravel…
Last updated: April 23, 2026
Tips
Your route passes through protected areas
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Waypoints
Start point
Parking
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10.3 km
Highlight (Segment) • Trail
Tip by
13.4 km
Highlight (Segment) • Trail
Tip by
37.7 km
Highlight • Trail
Tip by
44.0 km
End point
Parking
Way Types & Surfaces
Way Types
33.2 km
6.25 km
2.70 km
1.71 km
< 100 m
Surfaces
29.7 km
11.1 km
3.06 km
< 100 m
< 100 m
< 100 m
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Elevation
Highest point (2,460 m)
Lowest point (1,520 m)
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Weather
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Friday 3 July
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This route was planned by komoot.
The route is primarily gravel, making it suitable for gravel bikes, but it also features a mix of singletrack and paved sections. Expect varied conditions, including rugged jeep trails, occasional washboards, and sandy traps. Some technical sections with rocks and roots may require dismounting. Approximately 70% of the 42-mile route is unpaved.
While there isn't one single designated parking lot for the entire loop, many riders start near the Big Bear South Shore area. A notable access point mentioned is the Pirates Trail Trailhead, which is part of the network.
The best time to ride is typically from late spring through early fall (May to October) when the weather is mild and the trails are clear of snow. During these months, you can enjoy seasonal wildflowers and optimal riding conditions. Winter riding can be challenging due to snow and cold temperatures at higher elevations.
The Big Gravel Loop is located within the San Bernardino National Forest. While there isn't a specific permit required for mountain biking the trail itself, some areas within the National Forest may require an Adventure Pass for parking at certain trailheads. It's always best to check the latest regulations with the San Bernardino National Forest service before your visit.
No, this loop is generally considered an intermediate to hard mountain bike ride. It requires good to very good fitness and advanced riding skills due to significant elevation changes, steep grades (up to 45.3% in some sections), and technical terrain. Beginners may find it overly challenging.
You'll be treated to expansive and diverse scenery throughout the loop. Expect breathtaking views of Big Bear Lake and distant mountain ranges, including Mount San Gorgonio. The trail winds through dense pine forests, manzanita, and buckthorn. The views from Skyline Drive are particularly renowned, offering panoramic vistas.
Yes, the Big Gravel Loop integrates with and provides access to numerous other popular Big Bear trails. You'll encounter sections of the Skyline Trail, Radford Truck Trail, Clark's Grade, Knickerbocker Road 2N08, Fern Trail, and Pineknot Trail 1E01, among others, allowing for customized and extended rides.
Dogs are generally allowed on trails within the San Bernardino National Forest, including the Big Gravel Loop, but they must be kept on a leash at all times. Please remember to pack out any waste to keep the trails clean for everyone.
Key highlights include the scenic Skyline Drive, known for its incredible views, and challenging sections like Clarks Grade. The Pirates Trail Trailhead is also a well-known access point. The route offers a comprehensive tour of the Big Bear South Shore, combining gravel roads with singletrack sections.
Given the trail's difficulty and high-altitude sections, it's crucial to be well-prepared. Bring plenty of water (there are no reliable water sources on the trail), high-energy snacks, a repair kit for your bike, appropriate layers of clothing for changing weather conditions, sun protection, and a first-aid kit. A GPS device or the komoot app with the downloaded tour is highly recommended for navigation.
Yes, the loop includes several challenging sections. The climb up Mill Creek Road and the steep, rocky Radford Truck Trail are particularly demanding. Riders should also be prepared for occasional washboards and sandy traps, especially along sections like Skyline Drive. Some portions may require pushing your bike.
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