Marin County Parks Open Space Leash Policy: Dogs on leash are welcome to enjoy trails. Dogs are allowed off-leash under strict voice control on fire protection roads. Please follow posted rules.

This small preserve is only 15 acres, making it perhaps the least used but most visible among all MCOSD lands. It sits perched just above Highway 101 at the western edge of the Tiburon Peninsula, with views that feel surprisingly remote given how close you are to traffic noise below. The landscape is mostly grassland with species that have adapted to living alongside heavy human presence nearby, so don’t expect pristine wilderness—instead you get convenient, accessible trails with character.

There’s no direct public parking at the preserve itself, which is part of why it stays quieter than some regional parks. Access comes via the Ring Mountain Fire Road, which runs along the ridge from the Ring Mountain Preserve through the adjacent City of Tiburon Open Space. This means your walk will likely feel more like a journey, taking you through connected open spaces rather than a contained loop. The fire road gives you room to let your dog run under voice control if they’re reliable off-leash, though you’ll want to keep an eye out for other hikers and cyclists.

Getting there requires navigating the Tamalpais Drive and Paradise Drive area north or south of Highway 101, depending which direction you’re coming from. Once you make that turn onto Koch Road, you’re looking at a significantly quieter corner of the Tiburon Peninsula than you’d expect for such an accessible spot. The views across the grassland can be particularly nice on clear days when the bay visibility stretches out. Bring water—there’s no shade to speak of on these open ridges, and exposure can catch you by surprise even in cooler months.