Active.com lists nearly 100,000 eventsrunning, cycling, mountain biking, triathlons, and more.
Hiking & Climbing
Climbers, you can download free sample maps and buy guidebooks at SuperTopo.com. For info about an obscure range in Greece or a hard-to-reach thirteener in Colorado, Peakbagger.com and SummitPost.com are your best bets. And for tips on how to shed pounds from your pack, Backpackinglight.com is the Webs fast-and-light mecca.
Skiing & Snowboarding
SkiPressMag.com is best for resort news and culture. Backcountry skiers, check snow conditions at Avalanche.org. Knee-droppers, you can chat with members of your tribe at Telemarktips.com. Fixed heel? Geek out for hours over Dynafit reviews at Lou Dawsons blog, WildSnow.com.
Started by two ex-Paddler Magazine editors, PaddlingLife.net brings all of the features (news, reviews, links to real-time river flows, etc.) and none of the paper.
Orvis.com has great videos and info for beginners, but for advice on how to tie an elk hair caddis, SexyLoops.com is your site. For everything else, we recommend ThisIsFly.com, a refreshingly unpretentious online magazine.
Mountain bikers, roadies, and even cyclocross geeks, Cyclingnews.com has everything from technology reviews to race reports to personality profiles. Commuters and city dwellers, UrbanVelo.org is your source: Cycle Messenger World Championships, wheel building 101its all there. Everyone can learn how to keep bikes running smoothly at BicycleTutor.com, which has hundreds of how-to videos and articles.
Dont believe the hype: Surfline.com is great for events, but BuoyWeather.com is a better bet for global forecasts, while WetSand.com has the best California surf reportsand surfing blogs. East Coasters, head to SwellInfo.com.
For everything from mileage logs to customizable training plans, check out ActiveTrainer.com and MarathonGuide.com. The easiest route-measuring site is MapMyRun.com, which also offers a free training log and the best (and free) iPhone app for tracking your pace and distance.