Highlight • Summit
Big Rock Ridge
Mountain biking
5.0
(5)
Hiking
5.0
(2)
Big Rock Ridge is a prominent summit and ridge located in Marin County, California, near the communities of Novato and San Rafael. Standing at approximately 575 to 577 meters (1,887 to 1,895 feet), it is the second-tallest point in Marin County, surpassed only by Mount Tamalpais. This significant landform, part of the Marin Hills within the California Coast Ranges, stretches about five miles long, serving as a natural divider between Novato's Ignacio Valley and San Rafael's Lucas Valley.
What truly draws hikers and outdoor enthusiasts to Big Rock Ridge are the spectacular 360-degree panoramic views from its summit. Visitors consistently rave about the expansive vistas that sweep across the entire Bay Area, encompassing distant landmarks like Mount St. Helena to the north, Montara Mountain to the south, the Pacific Ocean to the west, and Mount Diablo to the east. On clear days, even the distant Sierra Nevada can be spotted, alongside closer views of Mount Tamalpais, Deer Island, and Loma Alta.
Before embarking on a Big Rock Ridge summit hike, it's helpful to know that the trails are generally considered moderate to difficult, often involving significant elevation gain. The terrain features rolling grasslands, oak-studded woods, and chaparral, with some areas being steep and exposed. Proper hiking footwear is essential, and layers of clothing are recommended to adapt to changing weather conditions, especially given the ridge's exposure. Parking is available at trailheads, notably off Lucas Valley Road, which is also where the ridge gets its name from the conspicuous "Big Rock" at the base of the Big Rock Trail.
Big Rock Ridge offers exceptional opportunities for hiking, mountain biking, and trail running. The Big Rock Ridge Trail is a popular choice, providing a challenging yet rewarding experience. Many sections of the trail are multi-use, accommodating hikers, dogs on leash, horses, and mountain bikes. The varied habitats along the ridge also make it a great spot for wildlife viewing, with sightings of coyotes and various bird species, and in spring, a vibrant display of wildflowers.
The highest point on the Big Rock Ridge Fire Road is a particular highlight, offering some of the most breathtaking views. A short spur trail from this point leads to an even better vantage down over George Lucas's Skywalker Ranch and the picturesque Lucas Valley. This spot provides a unique perspective, combining natural beauty with a glimpse into a famous local landmark.
For those seeking a strenuous workout with significant scenic rewards, Big Rock Ridge delivers. The feeling of being above the lowland hubbub, surrounded by nature and the company of birds and plants, is a key part of the experience. It's a place where you can truly connect with the natural landscape of Marin County.
Whether you're looking for challenging routes or simply want to explore the diverse landscapes of Marin County, Big Rock Ridge offers a variety of options. You can discover numerous hiking routes and trails, including portions of the Bay Area Ridge Trail system, and plan your adventure using komoot to find the perfect path for your activity level.
Tips
September 1, 2023
Hiking
November 25, 2023
Mountain biking
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Nearby routes
Best routes near Big Rock Ridge
4.8
(6)
33
riders
35.3km
03:51
1,150m
1,150m
The 680 Trail – Big Rock Ridge loop from Sleepy Hollow is a challenging mountain bike ride that delivers big on views and varied terrain. You'll navigate everything from flowing singletrack on the 680 Trail to incredibly steep fire roads on Big Rock Ridge, where grades can exceed 20%. The reward for your effort is spectacular, with panoramic vistas stretching across the Bay Area, including Mount Tamalpais and the Golden Gate Bridge, especially from the exposed grasslands of Big Rock Ridge.
This difficult 21.9-mile (35.3 km) route involves a substantial 3784 feet (1153 metres) of elevation gain and typically takes around 3 hours and 50 minutes to complete. It's designed for advanced riders with very good fitness. While the 680 Trail itself is relatively easy, the strenuous climbs on Big Rock Ridge mean you should be prepared for a demanding workout. Spring is a great time to visit for wildflowers, though summer fog can add a dramatic touch.
This loop connects the Terra Linda-Sleepy Hollow Divide Open Space Preserve and the Loma Alta Open Space Preserve, offering a rare opportunity for wooded singletrack in Marin County's open space system. The 2.5-mile Big Rock Trail singletrack descent is particularly prized by local mountain bikers for its flowing character. It's a true hidden gem for those seeking top-rated mountain biking trails near Sleepy Hollow.
4.8
(5)
29
riders
43.3km
04:46
1,450m
1,450m
The Big Rock Ridge – 680 Trail loop offers a truly epic mountain biking experience, taking you from shaded lower sections to the exposed, grassy upper reaches of Marin County's second-tallest peak. As you climb, the landscape transforms, opening up to continuous, sweeping views that stretch across the Bay Area, encompassing landmarks like Mount Tamalpais and the distant Pacific Ocean. This route combines flowing singletrack with grueling fire road ascents, providing a diverse and demanding ride.
This is a difficult mountain biking route, covering 26.9 miles (43.3 km) with a substantial 4760 feet (1451 metres) of elevation gain, typically taking around 4 hours and 45 minutes. You'll need very good fitness and advanced riding skills to tackle the steep grades, some of which can exceed 20%. Plan to start early, especially on warmer days, and ensure you carry ample water for this challenging and exposed journey.
What makes this loop particularly notable is its blend of trail types and the sheer scale of its panoramic rewards. The 2.5-mile Big Rock Trail singletrack is considered a local "treasure" for its pleasant, non-technical descent, a rarity in Marin County. This route also serves as a strategic connector, allowing access to other trails within the Marin County Open Space and Marinwood Open Space Districts, making it a cornerstone for advanced riders exploring the region.
5.0
(1)
7
riders
21.2km
02:30
780m
780m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
Details
Informations
Elevation 560 m
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Max wind speed: 16.0 km/h
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Frequently Asked Questions
What is the typical duration for a summit hike on Big Rock Ridge?
The main summit hike on Big Rock Ridge, which is about 7 miles roundtrip with an elevation gain of around 1,500 feet, typically takes 3 to 5 hours to complete, depending on your pace and how often you stop to enjoy the panoramic views. It's considered a moderate to difficult trail.
Are there any loop trails available on Big Rock Ridge?
While the Big Rock Ridge Trail itself is often done as an out-and-back, there are options to create loop routes by connecting with other trails within the Marin County Open Space and Marinwood Open Space Districts. These often involve portions of the Bay Area Ridge Trail system, offering varied scenery and challenges. Consulting a detailed trail map is recommended for planning a loop.
Is Big Rock Ridge suitable for beginner hikers?
Big Rock Ridge trails are generally considered moderate to difficult due to significant elevation gain and exposed sections. While not ideal for absolute beginners, those with some hiking experience and good physical condition can manage. There are no specific 'beginner' designated trails to the summit, but shorter, less strenuous walks can be found on the lower flanks of the ridge.
Where is the best place to park for Big Rock Ridge, and does it get crowded?
The primary trailhead and parking area for Big Rock Ridge is conveniently located off Lucas Valley Road. Parking can fill up quickly, especially on weekends and during peak seasons. Arriving earlier in the morning is highly recommended to secure a spot, as community tips suggest it gets busy.
Is a permit required to hike Big Rock Ridge?
No, a permit is not required to hike Big Rock Ridge. The area is managed as public open space by Marin County Open Space and Marinwood Open Space Districts, making it freely accessible to the public for recreational use.
Are dogs allowed on the trails at Big Rock Ridge?
Yes, dogs are generally allowed on the multi-use trails at Big Rock Ridge. However, they must be kept on a leash at all times. This is important for their safety, the safety of other trail users, and to protect local wildlife.
What are the best seasons to hike Big Rock Ridge, and is winter hiking possible?
Spring and fall are generally considered the best seasons for hiking Big Rock Ridge, offering pleasant temperatures and vibrant wildflowers in spring. Winter hiking is possible, but hikers should be prepared for potentially muddy conditions, cooler temperatures, and occasional rain. The ridge can be exposed, so layers are crucial regardless of the season.
What should I wear and bring for a hike on Big Rock Ridge?
Given the moderate to difficult terrain and exposed sections, sturdy hiking footwear is essential. Layers of clothing are highly recommended to adapt to changing weather conditions, as the ridge can be windy and temperatures can fluctuate. Don't forget plenty of water, sun protection (hat, sunscreen), and snacks. Trekking poles can also be helpful for the elevation changes.
Are there any cafes or pubs near Big Rock Ridge for post-hike refreshments?
Big Rock Ridge is located near Novato and San Rafael, both of which offer a variety of dining options. After your hike, you can find numerous cafes, restaurants, and pubs in downtown Novato or along Lucas Valley Road and nearby areas in San Rafael to refuel and relax.
What kind of wildlife can be seen on Big Rock Ridge?
Big Rock Ridge is home to diverse ecosystems, and visitors might encounter various wildlife. Common sightings include coyotes, deer, and a variety of bird species. In spring, the trails are also known for their vibrant wildflowers. Hikers should be aware that rattlesnakes are also present in the area, especially during warmer months.
Are there any hidden trails or less-trafficked routes on Big Rock Ridge?
While the main Big Rock Ridge Trail is popular, the extensive network of trails within the Marin County Open Space and Marinwood Open Space Districts offers opportunities to explore less-trafficked paths. These often branch off the main fire roads and can lead to quieter sections of the ridge. Exploring a detailed trail map or using a navigation app can help you discover these alternative routes.
What makes the views from Big Rock Ridge so special?
The views from Big Rock Ridge are renowned for their spectacular 360-degree panoramic vistas. From the summit, you can see across the entire Bay Area, including Mount St. Helena, Montara Mountain, the Pacific Ocean, Mount Diablo, and even the distant Sierra Nevada on clear days. Closer views encompass Mount Tamalpais, Deer Island, and Loma Alta, providing a truly expansive and memorable experience.