Description:
The rather remote area of central Marin off Fairfax-Bolinas Road offers some of the Bay Area's best trails for advanced riders. The Pine Mountain loop is considered a classic, with steeply rolling fire roads exploring scenic ridgetops and descending to cool evergreen forests.

Camp Tamarancho offers Marin's best single-track for those willing to pay the $45 annual or $5 daily fee. For the money you get one dynamite single-track loop with great trails built for bicyclists by the Marin Bicycle Trails Council. If you're fortunate enough to have free weekday time, run don't walk to purchase the pass (visit www.boyscouts-marin.org for more info or to purchase the day-pass). If you're stuck riding weekends only, you might find the combination of crowds, tight trails, and short sight-lines a bit stressful.

The lay of the land for both rides is classic Marin, rolling grass and oak-covered hills, punctuated by evergreen forests. The area has a wilder feel than other Marin destinations, and is more remote. Use extra caution here.