Anywhere from 8 to 20ft (depends on ramp and speed) and distances from 50 to 100ft+.

Longest jump I ever did was about 107ft take off to "landing". I landed it, but it hit so hard the car bounced back up about 2 or 3 ft in the air, then I lost it. I think it was about 15ft up at that point. I'm 6ft and its a little over twice my height as it passes over my head.

http://mywebpages.comcast.net/thirdg.../big_jump2.wmv