EXPN.com - http://expn.go.com/ Online version of ESPN's action sports network covering skateboarding, snowboarding, surfing, inline skating, BMX, Motocross and X Games. Includes photos, events, tricks and tips, athlete columns, biographies, videos, and contests.
Ripboard - http://www.ripboard.com/ Features photos, video clips, general information, and equipment of riverboarding whitewater at face level.
Air Above Water - http://www.airabovewater.com/ Information about cliff jumping. Includes photos, jumpers profiles, and directions to each jump site.
Adventure Sports - http://www.suite101.com/welcome.cfm/adventure_sports/ Covers activities such as mountain biking, surfing, rock climbing, sailing, snowboarding and surfing.
Grindco Productions - http://www.grindco.net/ Specializes in all aspects of extreme sports entertainment; from conception to marketing. Specializes in skateboarding, snowboarding, ski jumping, BMX, FMX and personal watercraft racing.
Extreme Bros - http://www.extremebros.com/ Features BMX, climbing, skateboarding, snowboarding, surfing and wakeboarding. Includes news, events, forums, photos, videos, tricks and tips.
Federation for Sport at Altitude - http://www.fsa-sky.org/ Covers high-altitude sports such as skyrunning, skyski, skybike and sky raid. Calendar of upcoming events, related links, news items and membership details.
Ekstremsportveko - http://www.ekstremsportveko.com/ Norwegian extreme sports week involving base jumping, skydiving, paragliding, rafting, kayak, climbing, and mountainbike. Includes photos, results, videos, and sign up information.
Kiiking - http://www.kiiking.ee/ A new sport-art from Estonia. Features history, events, mission, photo gallery and services.
International Gravity Sports Association - http://www.igsaworldcup.com Founded to support downhill inline skating, street luge, buttboarding, downhill skateboarding, and gravity biking. Includes news, rules, events, rider interviews, and links to related sites.
Camp Woodward - http://www.campwoodward.com/ Features tips and tricks for inline skating, skateboarding, and freestyle BMX racing.
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