Lake Lagunitas

Located near Fairfax, California, this trail is relatively flat and provides peaceful views of the lake as you pass over small creeks and groves of redwoods. It's good for all skill levels and is accessible year-round. It's a great trail for families and beginner mountain bikers.

It can be a little unclear how to reach the trail from the parking lot. When you park, walk toward the day use picnic area. From there, there is a fire road (easier for bikes) and stairs that run down from the dam that will take you up to the lake. 

There is a parking fee of $8.