5. Mammoth Mountain, CA
The Unbound Terrain Parks are a big kid’s playground.The intermediate riding starts with South Park’s kicker land, packed with 15-to-30-foot jumps. Or duck into the trees of Forest Trail Park. If you’ve got the skills, ride with the pros on the 60-to-80 foot booters in the Main Park. And don’t forget the JLA Art Park where you an do some creative jibbing on some creative works.