Samuel P. Taylor State Park spreads across Marin County near Lagunitas, offering genuine trail options and camping if you want to stay overnight with your dog. The park sits between Point Reyes National Seashore and Golden Gate National Recreation Area, giving you a sense of being in real backcountry without feeling isolated.

The Cross Marin Trail is the main draw—about five miles of mixed terrain that’s half paved and follows an old Northern Pacific Coast Railroad grade, so the incline stays manageable. As you walk, you’ll pass interpretive panels explaining the area’s history and environment, which helps break up the rhythm of a longer hike. Dogs do well on this trail since it’s not too steep and the railroad bed design means fewer sudden elevation changes.

The park has legitimate camping infrastructure if you want to make a weekend of it. Campgrounds come with showers, and there are picnic areas scattered throughout with accessible restrooms and parking in both the main area and upper campground. This matters because a full day of hiking plus setup time goes faster when facilities are nearby and functional.

History-wise, Samuel P. Taylor actually pioneered camping as a leisure activity back in the Gold Rush era—families would take the railroad out from the city for weekend trips, which explains why the infrastructure is still solid today. That legacy shows in how the park is organized.

Keep your dog on a six-foot leash while hiking and exploring the park itself. At night they need to stay in your tent or vehicle, which is standard for state parks. The Cross Marin Trail attracts other hikers regularly, so having your dog under control makes encounters smoother for everyone. The gentle grade and shade coverage from surrounding trees make summer visits more comfortable than some of the steeper Marin trails, though early morning is still your best bet to avoid midday heat.