All-Terrain Boarding
Akoni Kama, All Terrain Boarding, Another World Mountain Boarding Centre, ATB Club of Canada, ATBA, ATBA-UK, Board Rider's Alliance, Boyd in Aus, Dirtheads, East Coast ATB
Base Jumping
321CYA Productions, Australian B.A.S.E. Association, BASE Jumper, Basejumping.co.uk, Blinc Magazine, Bridge Day, Bridge Day, Bridge Day History, Dave's BASE, Dropzone.com: The BASE Zone
Bungee Jumping
Bungee Designs, Bungee Experience, Bungee Ireland, Bungee.com, Bungee.ie, SA Bungee, The UK Bungee Club
Directories
720 Ice, All Extreme Sports, GravityDex, iSportsDigest.com, Ramprage, Sail Riders, Sk8tv, WebRiding.com, Xtremesports.co.za
Events
Monsterjumps FMX World Cup, National Adventure Sports Show, Philips Fusion, Red Bull Crashed Ice 2003, Red Bull Events Portal, X Sports Tour Calendar
Land Luge
AuldOverTheRoad.com, Extreme Downhill International, Fastlane Rocketluge, Hot Heels, Land Luge Las Vegas, Luge Australia, Luge Force, MAD Luging, SideStreet Luge, Sting's Street Luge Resource
Magazines and E-zines
Adrenalin Magazine, AdrenalinTrip.Net, Armchair Hero, Blunt Magazine, Boarding, Boardpass, Concussion Magazine, Deep-In, Doctor Danger, Expressions
Parkour
BBC News: The Art of Le Parkour, Foucan, Kiell, Le Parkour, Le Parkour, New Milton Parkour Crew, Official website of Parkour, Parkour, Parkour Worldwide Association, Run City
Personal Pages
Andrew Walford's Photos, Bill Fryer Direct, Birthday Challenge.com, Chris Pouols, Daniel Tyrkas, Danny's Kitextreme, Dave's Outdoor Adventures, Deathsports, Decade 9, EIOZ
Videos and Films
Apocalypsnow, F.A. The video website, Go Pro Video, Northport Sk8 and Bike Pics, Off Road Video Productions, Re:Evolution of Sports, Somnambulance Productions, Teton Gravity Europe, Viosport.com, Xtremeride
Adventure Sports
Covers activities such as mountain biking, surfing, rock climbing, sailing, snowboarding, and surfing.
Air Above Water
About worldwide cliff jumping. Includes photos, jumpers profiles, and directions to each jump site.
Camp Woodward
Features tips and tricks for inline skating, skateboarding, and freestyle BMX racing.
Ekstremsportveko
Norwegian extreme sports week involving base jumping, skydiving, paragliding, rafting, kayak, climbing, and mountainbike. Includes photos, results, videos, and sign up information.
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.
Extreme Bros
Features BMX, climbing, skateboarding, snowboarding, surfing and wakeboarding. Includes news, events, forums, photos, videos, tricks and tips.
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.
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.
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.
Ripboard
Features photos, video clips, general information, and equipment of riverboarding whitewater at face level.
Street Active
Free 'Learn to Ride' clinics in skateboard, BMX, inline speed skating and inline hockey by accredited coaches.