4.9
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Hiking in White Hill Open Space Preserve offers routes across rolling hills and through varied woodlands in Marin County. The preserve is characterized by its fire roads and singletrack trails that ascend to ridges with views of the surrounding area, including Mount Tamalpais and Loma Alta. The landscape includes groves of coast live oak and California bay trees, as well as open chaparral on the higher slopes.
Last updated: April 26, 2026
4
hikers
11.2km
03:36
480m
480m
Hike the Loma Alta Peak Trail for a moderate challenge, panoramic Bay Area views, and seasonal wildflowers in Marin County.
3
hikers
23.1km
07:04
770m
830m
This difficult 14.4-mile hiking loop in Loma Alta Open Space Preserve offers challenging climbs and expansive views of San Francisco.

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9.04km
02:59
440m
400m
Hike the moderate 5.6-mile White Hill, Blue Ridge and Split Rock Loop, gaining 1448 feet in 3 hours through varied terrain and scenic viewpo
12.2km
03:32
320m
310m
Hike the moderate 7.6-mile White Hill, Hobo Camp, and Broken Dam Loop for diverse terrain, scenic views of Marin hills, and Mount Tamalpais.
14
hikers
7.89km
02:25
270m
270m
Hike the moderate 4.9-mile Old Railroad Grade loop in Loma Alta Open Space Preserve, featuring 875 feet of elevation gain and panoramic view
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Loma Alta literally translates to "high hill" and is the highest point in the Loma Alta Open Space Preserve. A few different dirt roads and trails lead to the bald summit that looks over the surrounding hillsides.
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With its peak at 1,404-foot (428 m), White Hill is a grassy horseshoe-shaped hill boasting fantastic views of the Marin County Ridge, Mt. Diablo, Loma Alta, and the north side of Mt. Tamalpais. In the spring, you can enjoy blooming lupines, California poppies, blue larkspur, and, if you're lucky, see a swallowtail butterfly or two.
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Best appreciated after winter rainfall, this waterfall is right along Old White Hill Grade trail. If surprised by a shower the massive pipe channeling the usually small trickle of water under the trail can serve as an emergency roof, but be careful if water levels increase suddenly ...
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At 1592 feet, Loma Alta is one of the highest points in Marin. For a less strenuous excursion, from the lower Loma Alta Open Space Preserve entrance on the Fairfax side to the White Hill entrance, Old Railroad Grade Fire Road runs along the lower perimeter of the 509-acre preserve. In rainy season, see Fairfax Falls cascading 25 feet. https://www.marincountyparks.org/parkspreserves/preserves/loma-alta
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Enjoy heavenly Bay Area views, especially at sunrise and sunset: Here you can leave the gradual former railroad grade and take the extremely steep Sunrise Fire Road trail to the summit. At 1592 feet, Loma Alta is one of the highest points in Marin. https://www.marincountyparks.org/parkspreserves/preserves/loma-alta
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White Hill Trail crosses under Brown Bridge and then climbs steeply to link Loma Alta Preserve ( https://www.marincountyparks.org/parkspreserves/preserves/loma-alta ) with White Hill Preserve ( https://www.marincountyparks.org/parkspreserves/preserves/white-hill ), which further links up with Cascade Canyon Preserve, and Gary Giacomini Preserve.
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Steep switchbacks single track to hike down into the canyon
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To avoid the traffic when riding up (or down) White Hill, the highest elevation along Sir Francis Drake Boulevard from Fairfax, the old railroad grade is a more gradual, mostly smooth gravel trail alternative.
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Yes, dogs are generally welcome in White Hill Open Space Preserve. They must be on a leash on all trails and fire roads. Please be mindful of other trail users, including hikers, cyclists, and equestrians, and always clean up after your pet to help protect the local wildlife and plants.
The historical B-17 bomber crash site is a compelling destination within the preserve. A popular way to reach it is via the White Hill and B-17 crash loop. This moderate route combines fire roads and singletrack trails, leading you through the area where the plane went down in 1946.
Yes, the preserve is excellent for loop hikes. While many trails connect to adjacent parks, you can complete a great circuit entirely within the area. For a challenging day out, consider the San Geronimo Ridge Road via B-17 Trail loop, which covers significant ground and elevation for rewarding views.
Spring is a particularly beautiful time to hike in White Hill Open Space Preserve. The hills are green, and the unique serpentine soils support a vibrant display of native wildflowers, including California poppies, lupines, and monkeyflowers. Autumn and winter also offer clear days and pleasant hiking conditions, while summer can be quite hot and dry on the exposed ridges.
The preserve offers a range of difficulties. There are over 100 routes, with the majority being moderate. These trails, like the White Hill Trailhead loop from Fairfax, typically involve steady climbs on fire roads and singletrack. There are also about a dozen difficult hikes for those seeking a serious challenge, and over 30 easier options for more casual walks.
Yes, the trail network in White Hill is well-connected to adjacent open space preserves, allowing for extended hikes. You can easily create routes that venture into the neighboring Loma Alta and Giacomini preserves. A great example is the Old Railroad Grade, Glen Fire, Smith Ridge & Sunrise loop, which explores the varied terrain of Loma Alta.
The diverse habitats of woodlands and chaparral support a variety of wildlife. Keep an eye out for black-tailed deer, coyotes, and bobcats. The preserve is also a great spot for birdwatching, with many species inhabiting the oak and bay tree groves. As always, observe wildlife from a respectful distance and do not feed the animals.
While many trails feature steep climbs, the wider fire roads can be suitable for families with older children who are up for a bit of a challenge. The key is to choose a shorter route and go at your own pace. The lower sections of the White Hill Trail offer pleasant walks through woodlands before the main ascent begins.
The summit of White Hill, at an elevation of 1,430 feet (436 m), offers spectacular 360-degree panoramic views. On a clear day, you can see many of Marin County's major peaks, including Mount Tamalpais, Mount Diablo, and Loma Alta. The ascent up the Blue Ridge Fire Road is well worth the effort for these sweeping vistas.
The preserve is highly regarded by the komoot community, with an average rating of 4.9 stars. Hikers often praise the stunning panoramic views from the ridges, the unique mix of woodland and chaparral landscapes, and the well-maintained network of fire roads and trails.
The primary access and parking area for White Hill Open Space Preserve is located in a pullout off Sir Francis Drake Boulevard in Fairfax. This trailhead provides direct access to the White Hill Trail. Parking is limited, so it's a good idea to arrive early, especially on weekends.


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