If you're a mountain biker, it's pretty much Mecca for "local" California rides. The Flow trail is quite the hoot. We usually go up early in the morning, it's about 3 hours from SLO, and do 2 laps through Demo and that yields just under 4000' feet of vertical and just under 20 miles distance. Then, hit the sausage shop for sammiches in Corralitos on the way home!