Federation for Sport at Altitude
Covers high-altitude sports such as skyrunning, skyski, skybike and sky raid. Site contains a calendar of upcoming events, related links, news items and membership details.

Extreme Bros
Features BMX, climbing, skateboarding, snowboarding, surfing and wakeboarding. Includes news, events, forums, photos, videos, tricks and tips.

EXPN.com
Online version of ESPN's action sports network covering skateboarding, snowboarding, surfing, inline skating, BMX, MotoX, and X Games. Includes photos, events, tricks and tips, athlete columns, biographies, videos, and contests.

Street Active
Free 'Learn to Ride' clinics in skateboard, BMX, inline speed skating and inline hockey by accredited coaches.

Ekstremsportveko
Norwegian extreme sports week involving base jumping, skydiving, paragliding, rafting, kayak, climbing, and mountainbike. Includes photos, results, videos, and sign up information.

Kiiking
A new sport-art from Estonia. Features history, events, mission, photo gallery and services.

Point X Camp
An action sports camp for kids located in Southern California and specializing in skateboarding, BMX, inline and motocross. Includes camp summary, dates, location, contact information, fees, application, equipment requirements, and image gallery.

Adventure Sports
Covers activities such as mountain biking, surfing, rock climbing, sailing, snowboarding, and surfing.

She Shreds
Global community for extreme women athletes of all ages and abilities.

Camp Woodward
Features tips and tricks for inline skating, skateboarding, and freestyle BMX racing.

Ripboard
Features photos, video clips, general information, and equipment of riverboarding whitewater at face level.

Grindco
Specializes in all aspects of extreme sports entertainment; from conception, to marketing, to onsite production and operations. Specializes in skateboarding, snowboarding, ski jumping, BMX, motor scootercross, and personal watercraft racing.

Air Above Water
About worldwide cliff jumping. Includes photos, jumpers profiles, and directions to each jump site.