4.0
(5)
471
runners
80
runs
Jogging around Lucas Valley-Marinwood offers diverse natural landscapes, characterized by rolling hills, open valleys, and extensive trail systems. The region features wooded areas and expansive grasslands, providing varied terrain for runners. Natural features like Big Rock Ridge and the Lucas Valley Preserve contribute to the scenic beauty and offer numerous routes for outdoor activity. Miller Creek also flows through the community, adding to its ecological diversity.
Last updated: April 24, 2026
14
runners
11.0km
01:15
20m
20m
Jog along the San Francisco Bay Trail: Hamilton Wetlands for a moderate 6.8-mile (11.0 km) route that takes about 1 hour and 15 minutes. You will experience the open expanseโฆ
10
runners
11.9km
01:38
400m
400m
If you're ready for a challenging jogging experience, the Big Rock Ridge Trail delivers a difficult 7.4-mile (11.9 km) route. You'll gain 1312 feet (400 metres) in elevation, typically completingโฆ

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11.0km
01:46
680m
670m
A difficult 6.8-mile jogging loop in San Rafael, the Goat & Big Cat Trails offer a challenging workout with 2216 feet of elevation gain.
15.2km
02:08
660m
660m
Jog the difficult 9.4-mile Loma Alta and Bay Area Ridge Trail Loop for strenuous climbs and panoramic views of the Bay Area.
5.0
(1)
23
runners
26.8km
03:39
1,060m
1,060m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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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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This broad, flat fire road climbs gradually with magnificent views of the San Francisco Bay, Mount Tamalpais and Mount Diablo in the distance. The surrounding ridges of the path and many wildflowers along the way offer multiple photo opportunities along the way. The loop at the top is an excellent place to take a break and enjoy the beautiful views.
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Embark on an adrenaline-fueled mountain biking adventure through Big Rock. The trail reaches its peak at the towering landmark, a colossal rock that adds a unique touch to the experience. Exercise caution on the descent; the pavement can get slippery, adding an exhilarating challenge to this thrilling ride.
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Big Rock Ridge, a striking ridge near Novato, California, standing as Marin County's second-tallest peak. Spanning 5 miles from northwest to east, it creates a natural boundary for central and southern Marin County. Named after the rock at the base of Big Rock Trail, this ridge promises awe-inspiring views and invigorating trails.
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This broad, flat fire road climbs gradually with magnificent views of the San Francisco Bay, Mount Tamalpais and Mount Diablo in the distance. The surrounding ridges of the path and many wildflowers along the way offer multiple photo opportunities along the way. The loop at the top is an excellent place to take a break and enjoy the beautiful views
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There is plenty of street parking at this trailhead, with the amazing Big Rock nearby to make it easy to spot. The Bay Area Ridge Trail runs along the ridgelines surrounding the San Francisco Bay area and spans over 500 miles of multi-use trails. This portion offers some of the best views of Marin and the city skyline.
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Big Rock Trail cuts through Lucas Valley Open Space to reach the 2nd highest point in Marin County. From later winter through early summer the hills are verdant green and often covered in wildflowers. Bring plenty of water and a wide brimmed hat if it's a warm day as there is little shade, but this means the views are wide open and beautiful.
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Highest point on Big Rock Ridge Fire Road with panoramic views of the Bay, Marin county, and even across the East bay to Mt. Diablo and south to San Francisco. A short spur trail here leads to a point with slightly better views down over Skywalker Ranch and the Lucas Valley.
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Lucas Valley-Marinwood offers a wide selection of running routes, with over 70 trails to explore. These include a mix of easy, moderate, and difficult options, catering to various fitness levels.
The terrain in Lucas Valley-Marinwood is quite varied, characterized by rolling hills, open valleys, wooded areas, and expansive grasslands. You'll find everything from gentle paths to challenging inclines, often featuring chaparral and oak woodlands.
Yes, there are several easier options. For instance, San Francisco Bay Trail: Hamilton Wetlands offers a moderate, relatively flat experience through wetlands. Lucas Valley Park also features an asphalt path suitable for light jogging, surrounded by scenic grasslands.
Absolutely. For a challenging run with significant elevation, consider the Big Rock Ridge Trail, which ascends to Big Rock Ridge, the second-highest point in Marin County. Another demanding option is the Loma Alta and Bay Area Ridge Trail Loop, known for its varied terrain.
Yes, many routes provide stunning vistas. The Big Rock Ridge Trail offers panoramic views stretching from Mount Burdell to the Golden Gate. You might also encounter natural monuments like The Big Rock - Skywalker Ranch or explore the Roy's Redwoods Open Space Preserve.
Many trails are suitable for families, especially those looking for gentler paths. Lucas Valley Park offers an easy asphalt path, and the extensive trail network includes various easy to moderate options within the Lucas Valley Preserve, providing a pleasant outdoor experience for all ages.
Marin County's open space preserves generally welcome dogs on leash, making many of the trails in Lucas Valley-Marinwood dog-friendly. Always check specific trail regulations before heading out to ensure a pleasant experience for you and your canine companion.
The running routes in Lucas Valley-Marinwood are highly rated by the komoot community, with an average score of 4.2 stars from over 5 reviews. Runners often praise the diverse natural landscapes, varied terrain, and the scenic beauty of the area's extensive trail systems.
Yes, loop routes are popular in the area. A notable option is the Goat & Big Cat Trails loop โ San Rafael, which takes you through the Lucas Valley Preserve. The Loma Alta and Bay Area Ridge Trail Loop is another excellent circular option.
You'll encounter diverse natural habitats, including chaparral and oak woodlands, rolling hills, and open valleys. Miller Creek flows through the community, contributing to its ecological diversity. Keep an eye out for local wildlife, especially in the protected areas of Lucas Valley Preserve and Loma Alta Open Space Preserve.
Yes, parking is generally available near the trailheads for many of the popular running routes in Lucas Valley-Marinwood and the surrounding open space preserves. Specific parking details can often be found on individual route pages or local park websites.
Lucas Valley-Marinwood offers good running conditions year-round, but spring and fall are particularly pleasant with milder temperatures and vibrant natural scenery. Summers can be warm, so early morning or late afternoon runs are recommended, while winters are generally mild, making it suitable for outdoor activity.


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