Who says summer vacations should be relaxing? With July and August around the corner, it's time for more than armchair adventure. Dig out those hiking boots, dust off the compass and spread out the trail maps. Whether you're hiking, spelunking, climbing or mountain cycling, these sites will get you fired up for a sweat-drenched outdoor jaunt to remember.
Popcorn? Moonmilk? Those are just two of the cool subterranean formations to light up while spelunking through this virtual cave site before you pack up to go under.
Backcountry trekkers and weekend bushwhackers can check out Basecamp's site to discover the best spots in the U.S. to hike, the gear to pack and the most effective ways to keep your grub out of the wrong paws.
Steer through Mountain Bike Review's site to get the lowdown on 1,100 trails, mostly in the U.S. and Canada; talk shop with other spokeheads; catch up on racing news; or find the right ride for you.
Daredevils can scale this rock-climbing site to locate practice gyms, guides or climbing partners and to size up vertical challenges across the land.
sites we'd like to see
Cyber Hades where sidelined Patrick Ewing descends to keep up with playoff action.
Real-time video of Jaret Wright's fastball, plus a transcript of his woodshed talk with American League president Gene Budig.