I have found a lot of unusual or extreme sports in Internet. Here you have some examples:
- in the air, sky diving, jet fighter flights, wingsuit flying, aerobatic flight, aerochute flights, parachute, ...
- in the water, water skiing, wakeboarding, kite surfing, speed boats, skuba diving, swim with sharks, jet ski, parasail, kayaking ...
- in the mountains, mountain bike extreme, ultra-marathons, climbing, caving and potholing, coasteering, absailing, scrambling or winter sports like skiing,Snowboarding or ice climbing...climbing Mount Everest, rock climbing,
- in the city, marathons, skating, roller skating, Skate , Bicke moto cross, Free Moto cross, BTT, inline, wake, longboard...
Also, you can find an extense offer of extreme sports as the rally car driving, bungy jumps, V8 race buggies, ...