The best gravel rides in Coal Creek Open Space Preserve
5.0
(1)
34
riders
8
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Gravel biking in Coal Creek Open Space Preserve offers diverse landscapes within its approximately 500 acres, featuring rolling grassy hills, mixed oak woodlands, and shaded forest areas. Trails connect Skyline Boulevard and Alpine Road, providing crucial links for longer loops through adjacent areas. From open grassland ridges, views of the San Francisco Bay Area are visible. The preserve also features seasonal waterfalls and creeks, with vibrant wildflowers in spring and autumn colors from deciduous trees.
Best gravel bike trails inβ¦
Last updated: May 17, 2026
5.0
(1)
5
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
9
riders
48.1km
03:34
1,170m
1,170m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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5
riders
30.8km
02:00
550m
550m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4
riders
48.2km
03:59
1,300m
1,300m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
2
riders
13.9km
01:13
440m
440m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Tips from the Community
Enid Pearson-Arastradero Preserve offers rolling grasslands mixed with oak and evergreen trees. The trail system starts on pavement and transitions to packed dirt and gravelβgreat for bikes with wider tires or a solid gravel setup. Keep an eye out for deer, coyotes, and even bobcats, and take a moment to pause at one of the benches or by Arastradero Lake to enjoy the open views.
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Borel Hill is my favorite place to watch spring flowers. The western slope near ancient oaks (5-10min west of Borel Hill) are covered with orange California Poppies and purple flowers starting in April. Borel Hill itself peaks around mid May and has a wide variety of flowers. The show lasts only a few weeks until end of May. The peak time and flower intensity varies from year to year, so come several times between April and May. There is small summit NW of Borel Hill and a narrow dirt trail leads you to a rock within 2 min. The rock is big enough for 2-3 to sit on. On a sunny day, the rock is nice warm even if the air is cold. Good views on the ocean and the Bay.
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Didnβt OLR used to turn into Dirt before reaching Skyline? Is it all pavement now?? Scott
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Here, the Steve's Creek Nature Trail and the Canyon Trail intersect. A lovely patch of grass surrounds the junction, making it an ideal spot for a break.
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Black Mountain, situated on Monte Bello Ridge, is a popular destination for hikers and mountain bikers. With an elevation of 2,812 feet, it's easy to understand why. From the summit, the views of the Santa Cruz Mountains and Silicon Valley are breathtaking.
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This fantastic tavern, founded in 1852, is the second oldest in the state. It features a large, beer garden-style outdoor area with plenty of shade. An extensive beer and food menu makes it a perfect stop to enjoy a brew and some great food after a ride.
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From Elena Road, youβll be treated to breathtaking views of the bay and surrounding hills. The vantage point offers a peaceful scene of the landscape, showcasing the natural beauty of the Bay Area.
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Frequently Asked Questions
How many gravel bike trails are available in Coal Creek Open Space Preserve?
There are 9 gravel bike trails documented in Coal Creek Open Space Preserve, offering a range of experiences from moderate loops to more challenging, longer routes.
What are the general difficulty levels for gravel biking in Coal Creek Open Space Preserve?
The trails in Coal Creek Open Space Preserve cater to various skill levels. You'll find 1 easy route, 3 moderate routes, and 5 difficult routes, ensuring options for different abilities.
Are there any family-friendly gravel biking options in the preserve?
For a moderate, family-friendly option, consider the White Oak Trail β Bella Vista Trail loop from Los Trancos Open Space Preserve. This 6.2-mile route winds through varied woodlands and open areas, taking about 1 hour 8 minutes to complete.
Where can I find scenic views of the San Francisco Bay Area while gravel biking?
Many open grassland ridges within the preserve offer stunning views of the San Francisco Bay Area, particularly from areas below the Caltrans vista point parking. The Clouds Rest Trail is specifically noted for its beautiful South Bay vistas.
Are there any trails with waterfalls or creeks?
Yes, during the wetter winter months, you can find seasonal waterfalls in Coal Creek Preserve. The Old La Honda Road β Portola Road loop from Portola Valley, for instance, leads through rolling hills and forested sections where you might encounter these natural features. Coal Creek and Corte Madera Creek also add to the natural charm, with Corte Madera Creek burbling year-round.
What is the best time of year to go gravel biking in Coal Creek Open Space Preserve?
The preserve is particularly vibrant in spring for wildflowers, especially around the Meadow Trail area. Autumn offers beautiful displays of orange and red leaves from deciduous trees like black oak and big-leaf maple. For seasonal waterfalls, winter is the best time to visit.
What are the rules and regulations for gravel biking in the preserve?
When gravel biking in Coal Creek Open Space Preserve, helmets are required. There's a speed limit of 15 mph, which reduces to 5 mph when passing others. It's important to note that e-bikes are generally not permitted on most trails within the Midpeninsula Regional Open Space District.
Are there any challenging routes for experienced gravel bikers?
Experienced gravel bikers looking for a challenge can explore routes like the Old La Honda Road β West Old La Honda Road loop from Portola Valley. This difficult 29.9-mile path features significant elevation gain and connects through the region's diverse terrain.
Where can I park when visiting Coal Creek Open Space Preserve for gravel biking?
Parking is available, including at the Caltrans vista point parking area, which is also a great spot to access trails and enjoy views of the San Francisco Bay Area.
What kind of wildlife might I encounter on the trails?
The preserve is home to various wildlife. You might spot footprints of coyotes, bobcats, raccoons, and skunks. Mountain lions have also been sighted in the area, so always be aware of your surroundings.
Are there any long-distance gravel biking loops that connect to adjacent areas?
Yes, the trails in Coal Creek Open Space Preserve serve as crucial links, allowing for longer loops through adjacent areas like Russian Ridge and Portola Valley. An example of a longer, difficult route is the Black Mountain β Arastradero Lake loop from Portola Valley, covering over 30 miles.
Can I find trails that combine shaded forests with open grasslands?
Absolutely. The preserve's terrain features a mix of shaded forest areas, offering respite, and open grassland ridges. Trails like Crazy Pete's Trail and Meadow Trail provide diverse experiences, winding through oak woodlands and emerging into open meadows.
What is the elevation gain like on some of the more difficult routes?
For difficult routes, you can expect significant elevation gain. For example, the Adobe Creek β Boronda Lake loop from Portola Valley, a 19.1-mile difficult route, involves over 1,800 feet of ascent.
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