It's always good to know where you're headed (and how to get back) when you set out for a run, walk, or bike ride. Check out these map and route sites to get squared away:

Map your runs easily so you can spend more time running
Guide to a variety of outdoor activities and trails
Guide to over 60 hikes all around the Bay Area
Scenic hikes on the peninsula
Great bike routes in the Palo Alto area
Track your runs with your iPhone

Have a great resource that you use? Let us know.