RUNNING CYCLING SWIMMING WALKING
Running back to top
Weekend warrior? Marathon master? Somewhere in between? Here are some useful resources no matter what kind of runner you are:

Map your runs easily so you can spend more time running
Gear reviews, and training tips
Training, nutrition, and gear
Track your runs with your iPhone
Cycling back to top
If you like to exercise with a pair of wheels beneath you, then these resources should come in handy:

Gear reviews, and training tips
Training, nutrition, and gear
Great bike routes in the Palo Alto area
Swimming back to top
When they say "adult swim" and you don't think about Cartoon Network, these are the resources just for you:

Training, nutrition, and gear for triathletes
General training, nutrition, and gear
Walking back to top
When someone says "Take a hike" do you get pumped? If you answered "Yes" then check these out:

Guide to over 60 hikes all around the Bay Area
Scenic hikes on the peninsula