William R. Mason Regional Park (Wilderness Area)
William R. Mason Regional Park (Wilderness Area)
4.6
(163)
4,632
riders
152
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Road cycling in William R. Mason Regional Park (Wilderness Area) offers a network of mostly paved routes across its 339 acres. The park features extensive green spaces, a 9-acre artificial lake, and a 123-acre natural wilderness area with rolling hills. Routes generally feature minimal elevation gain, making them accessible for various fitness levels. The park connects to larger bikeway networks, providing diverse terrain options.
Last updated: May 13, 2026
88
riders
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
26
riders
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.

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12
riders
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
14
riders
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
8
riders
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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Popular around William R. Mason Regional Park (Wilderness Area)
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Cycling in William R. Mason Regional Park (Wilderness Area)

Gravel biking in William R. Mason Regional Park (Wilderness Area)
Parallel with I-405, this is a beautiful trail with little traffic.
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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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Other than a few people walking, this trail is empty and great for a scenic ride among vegetation.
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San Diego Creek is a 16-mile urban river that empties into Upper Newport Bay in Orange County. It follows Irvine's extensive system of trails and bike lanes, flowing through industrial areas, residential neighborhoods, and even the borders of the university campus.
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San Joaquin Marsh Wildlife Sanctuary, located in Irvine, encompasses 300 acres of restored coastal freshwater wetlands. A haven for birdwatchers, it hosts diverse bird species and offers educational programs.
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The park has a paved foot and cycle path running through it. Amazing views. Great ride.
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Crystal Cove State Park, captivates visitors with its pristine beaches, tide pools, and rugged coastal bluffs. A haven for outdoor enthusiasts, it offers hiking trails, historical cottages, and stunning ocean views, making it a cherished natural escape for anyone.
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A nice blacktop lane for cycling, the bikeway begins across Jamboree Rd, traveling north parallel to the local roads, passing the scenic Citrus Ranch and Cedar Grove Parks along the way. The trail ends at Peters Canyon Regional Park, where you can park up your bike and pick up a hiking trail.
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William R. Mason Regional Park offers a wide selection of road cycling routes, with over 150 different tours available. These routes cater to various skill levels, from easy rides to more challenging options.
The park's road cycling routes generally feature mostly well-paved surfaces with very little elevation gain, making them accessible for casual rides. However, some connected routes, such as the longer loops that extend beyond the immediate park boundaries, can offer more challenging inclines.
Yes, the park is very family-friendly. The trails within William R. Mason Regional Park itself are known for their minimal elevation gain and well-maintained surfaces, making them enjoyable for casual rides with family members. The park also offers amenities like tot lot playgrounds and picnic areas.
While cycling, you'll experience lush green spaces, a picturesque 9-acre lake popular for model boat sailing, and interconnected streams. The park is also home to a diverse ecosystem, so you might spot various bird species like egrets and herons, as well as quail and rabbits, particularly around the lake and wilderness areas.
While many routes within the immediate park are relatively flat, the park connects to larger bikeway networks that offer more challenging options. For instance, routes like the Upper Newport Bay Trail – San Diego Creek Trail loop, which is nearly 31 miles long, or the San Diego Creek – Hicks Canyon Trail loop, at over 34 miles, provide longer distances and some varied terrain for more experienced cyclists.
Several popular loop trails are accessible from the park's vicinity. The San Diego Creek Trail – Shady Canyon Trail loop is a moderate 12.8-mile path featuring well-maintained surfaces. For longer rides, the Upper Newport Bay Trail – San Diego Creek Trail loop from University of California, Irvine offers a 26-mile circuit.
Yes, William R. Mason Regional Park provides ample parking facilities for visitors. There are designated parking areas within the park, making it convenient for cyclists to access the trails.
The park is accessible via public transportation. You can check the OCTA bus routes for stops near William R. Mason Regional Park in Irvine. Additionally, the Irvine CONNECT shuttle may have stops in the vicinity, offering further connectivity.
The mild Southern California climate makes William R. Mason Regional Park suitable for road cycling year-round. However, spring and fall generally offer the most pleasant temperatures for outdoor activities, with less heat than summer and less chance of rain than winter.
Yes, William R. Mason Regional Park is located in Irvine, which has numerous cafes and restaurants nearby. You can find various dining options within a short distance, including places suitable for a post-ride meal or coffee.
The area is highly rated by the komoot community, with an average score of 4.4 stars from over 150 reviews. Reviewers often praise the park's lush green spaces, the picturesque lake, and the extensive connections to regional bikeway networks, which offer options for different ability levels.
Absolutely. The park serves as an excellent hub, connecting to other prominent cycling routes such as the Mountains to Sea/Peters Canyon Bikeway, the Cypress Village Trail, and the San Diego Creek bike trail. This expands the possibilities for longer and more varied rides beyond the park's immediate boundaries.


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