4.9
(11)
78
riders
21
rides
Gravel biking in Bommer Canyon Open Space Preserve offers diverse terrain within a 4,000-acre natural sanctuary in southern Irvine, California. The landscape features rolling hills, ancient oak and sycamore groves, native grass meadows, and coastal sage scrub. Trails generally consist of dirt and gravel roads, making them suitable for gravel bikes, with some routes featuring significant elevation changes. This preserve provides a blend of natural beauty and historical significance.
Last updated: May 16, 2026
5.0
(1)
3
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
13
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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6
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
5
riders
34.8km
02:25
580m
580m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
12
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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This is a nice little loop around El Moro (now known as Crystal Cove). Some fun climbing, some fun downhill, some fun singletrack but mostly fire road. Nothing too techy.
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This paved multi-use path winds over gently rolling terrain with cacti, flowers, and some sparse tree cover. This is a great brief escape from the city without leaving Irvine.
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The trail is wide packed dirt and takes you through the meadows and rolling hills. This is the backbone of the Shady Canyon trail system and connects to a number of other trails and routes in the park.
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This trail is fast and nontechnical, and you get great views across the rolling hills of Crystal Cove State Park all the way down to the ocean. Hikers and dog-walkers share these trails but the path is fairly wide and visibility is good.
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Other than a few people walking, this trail is empty and great for a scenic ride among vegetation.
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This trail places you at the top of Crystal Cove State Park with expansive views of all the protected land and ocean off in the distance.
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Laguna Coast Wilderness Park is nestled in the last coastal canyons of Southern California. With 40 miles of trails meandering through oak and sycamore woodlands, the park offers a scenic journey leading to ridges with breathtaking vistas.
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You get a panoramic view of the coast from the packed sandy trails that lead right up to the shoreline. There is an informational signpost about grey whales.
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Bommer Canyon Open Space Preserve offers over 20 gravel bike trails. These routes cater to various skill levels, from easy paths to challenging rides with significant elevation changes.
The trails in Bommer Canyon Open Space Preserve range from moderate to difficult. While there are a few easier options, the majority of routes, such as the Serrano Ridge Trail – Shady Canyon Trail loop from University of California, Irvine, are considered difficult due to substantial elevation gains and varied terrain. There are 17 difficult routes and 6 moderate routes available.
Yes, many routes in Bommer Canyon feature significant elevation gain, with some reaching up to 3,000 feet. For example, the Serrano Ridge Trail – Shady Canyon Trail loop from University Town Center includes over 720 meters (2,360 feet) of climbing, requiring good fitness and advanced riding skills.
While many trails offer a challenge, there is at least one easy gravel biking route suitable for families or those seeking a less strenuous ride. The preserve's diverse network ensures options for different skill levels, including paths through serene woodlands and meadows.
The trails in Bommer Canyon Open Space Preserve are generally composed of dirt and gravel roads, making them ideal for gravel bikes. Riders can expect varied terrain, including rolling hills, and paths winding through oak and sycamore groves.
While many trails are open daily from dawn to dusk for self-guided exploration, some areas within Bommer Canyon Open Space Preserve are accessible only during designated 'Wilderness Access Days' or through guided programs. It's advisable to check official access information before planning your ride. For more details on access, you can visit the Nature Reserve of Orange County website.
Specific parking information for gravel bikers is not detailed in the guide, but Bommer Canyon Open Space Preserve typically offers designated parking areas for visitors. It's recommended to check the official preserve website or local signage for the most current parking availability and regulations.
As you ride through Bommer Canyon, you'll encounter rolling hills, ancient oak and sycamore groves, native grass meadows, and coastal sage scrub. Notable natural features include rugged rock outcrops like the unique 'Three Sisters' sandstone formations. The preserve also holds historical significance, with the historic Irvine Ranch Cattle Camp providing a glimpse into the area's ranching past.
The area is highly rated by the komoot community, with an average score of 4.8 stars from 5 reviews. Reviewers often praise the diverse terrain, the blend of natural beauty and historical charm, and the expansive views from higher points. Many appreciate the well-suited dirt and gravel roads for gravel bikes.
The guide does not specify the dog policy for gravel biking trails in Bommer Canyon Open Space Preserve. It is recommended to check the official preserve rules or the Nature Reserve of Orange County website for current regulations regarding dogs on trails.
Bommer Canyon is an important preservation area for local plants and wildlife. Riders may observe diverse wildlife such as mule deer and various bird species, including acorn woodpeckers, cactus wrens, and roadrunners, especially in areas near woodlands and grasslands.
Yes, Bommer Canyon offers several loop trails for gravel biking. A popular option is the Pacific Ridge Trail – Laguna Coast Wilderness Park loop from Bommer Canyon Open Space Preserve, which is a moderate 9.9-mile route providing varied terrain and scenic views.


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