Hey Kim -
Yeah, I have some nice ones depending on your fitness level.
Here are a few of my favorites:
#1 The Goodspeed Clark Natkemperer trail to Gun Sight Rock. You drive to Sugarloaf State Park, on the way up the road, there is a parking lot on the left and side of the road. If you enter the park gates, you have gone too far. This route is about 7.2 miles round trip and gains quite a bit of elevation.
#2 Pt Reyes. Walk from the visitor center. Fire Road, not much climbing but very nice.
#3 The Cataract trail on Mt Tamalpais. Very well shaded, great for when the North Bay os too hot.
Best of luck.
JC#2