4.8
(53)
646
hikers
Dog friendly hiking trails in French Ranch Open Space Preserve traverse 403 acres of diverse landscapes in Marin County. The preserve features deep, forested canyons with Douglas fir, redwood, oak, and tanoak trees, alongside ridges offering expansive valley views. Significant areas of exposed serpentine soil at the western end support rare plant species. This area is also a crucial part of the Lagunitas Creek watershed.
Last updated: July 8, 2026
5.0
(1)
10
hikers
14.8km
04:20
400m
390m
Embark on the Bon Tempe Lake and Cataract Falls Loop Trail for a moderate hike spanning 9.2 miles (14.8 km) with an elevation gain of 1309 feet (399 metres). You…
2
hikers
17.9km
05:21
520m
530m
Embark on the Bon Tempe Lake, Alpine Lake & Laurel Dell Falls loop, a difficult hike spanning 11.1 miles (17.9 km) with a significant elevation gain of 1718 feet (523…

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1
hikers
15.2km
04:41
530m
520m
Embark on the Mickey O' Brien Trail to Coastal Trail loop, a moderate hiking route that guides you through the diverse landscapes of the Mount Tamalpais Watershed. This 9.4-mile (15.2…
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Don't be fooled, 'Alpine Lake' is the name of this body of water, but the fact that it is an alpine lake is highly debatably at a lowly 768 feet. Irregardless, the views are still nice. You can look but not touch as there is no swimming or boating allowed in the lake.
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The Lagunitas Dam, completed 151 years ago, was built in less than four months and was 480 feet long with a crest of 20 feet. The purpose was to supply development in the San Rafael area. Its current capacity is 350 acre-feet or 114 million gallons. Lake Lagunitas is one of seven Marin Municipal County Reservoirs, and the combined rainfall collected from these reservoirs makes up around 75 % of the district's water supply.
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Don't be fooled, 'Alpine Lake' is the name of this body of water, but the fact that it is an alpine lake is highly debatably at a lowly 768 feet. Irregardless, the views are still nice. You can look but not touch as there is no swimming or boating allowed in the lake.
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This is a beautiful small lake. Quite a delight to ride here!
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Very strenuous and technical hike but beautiful. Dog friendly.
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Covered shelter hut, picnic tables, restroom, and parking.
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Shaded picnic platform overlooking the lake and some interesting display of low-tech dam water management infrastructure.
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There are 3 dedicated dog-friendly hiking routes in French Ranch Open Space Preserve, offering a range of experiences for you and your canine companion.
The preserve features diverse terrain, from deep, forested canyons with Douglas fir and redwood trees to ridges offering expansive valley overlooks. You'll also encounter unique serpentine soil areas supporting rare plant species. The trails vary, providing both serene, shaded paths and more open sections.
Yes, several dog-friendly routes feature impressive natural attractions. For instance, the Bon Tempe Lake and Cataract Falls Loop Trail includes the beautiful Cataract Falls. Another route, the Bon Tempe Lake, Alpine Lake & Laurel Dell Falls loop, passes by Laurel Dell Falls. The preserve is also part of the vital Lagunitas Creek watershed.
The area is highly rated by the komoot community, with an average score of 4.9 stars from 42 ratings. Reviewers often praise the diverse terrain, the peaceful forested sections, and the well-maintained paths that make for an enjoyable experience with dogs.
Regulations regarding off-leash dogs can vary. It's always best to check the official signage at trailheads or the Marin County Parks website for the most current rules to ensure a safe and compliant hike for everyone.
Parking is generally available at designated trailheads. Specific parking information for each route can often be found on the individual tour pages on komoot. For example, access points for trails like the Bon Tempe Lake and Cataract Falls Loop Trail typically have nearby parking facilities.
Spring and fall are generally ideal for hiking with dogs in French Ranch Open Space Preserve. The weather is milder, and the natural beauty, such as blooming wildflowers in spring or vibrant foliage in fall, is at its peak. Summer can be warm, so early morning or late afternoon hikes are recommended, and always carry plenty of water for both yourself and your dog.
Yes, for experienced hikers and their dogs, the Bon Tempe Lake, Alpine Lake & Laurel Dell Falls loop is a challenging option. This route covers nearly 18 km with significant elevation gain, offering a strenuous but rewarding adventure through varied landscapes.
Many trails in the preserve offer scenic views. The region research mentions ridges that provide expansive views overlooking the valley. While not a specific route, the Moon Hill Summit - Nicasio Valley Road is a notable highlight in the area known for its vistas.
Always bring plenty of water for both you and your dog, a leash, waste bags, and a portable bowl. Depending on the length of your hike, snacks for both of you are also a good idea. Consider dog booties for rocky terrain or hot surfaces, and a first-aid kit for minor scrapes.
While the listed dog-friendly routes are generally longer, the preserve itself offers diverse trails. For shorter, family-friendly options that might also be suitable for dogs, consider exploring parts of the Roy's Redwoods Loop Trail, which is known for its easy 3.2-mile path through redwood groves and is often cited as family-friendly. Always check specific trail regulations for dogs.
Yes, all three featured dog-friendly routes are loop trails, providing a varied experience without retracing your steps. Examples include the Bon Tempe Lake and Cataract Falls Loop Trail and the Mickey O' Brien Trail to Coastal Trail loop.


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