According to Official Guinness Records,
The longest moving quad bike jump is 22.3 m (73 ft 4.5 in) and was achieved by Cody Elkins (USA) on the set of 'Guinness World Records Unleashed' in California City, California, USA, on 8 July 2013.
Mr. Elkins jumped over a 2012 Porsche Panamera, a 2013 Bentley Continental GT, a 2013 Ford F-150 Raptor Crew, and a 2012 Sportchassis P2, which was the vehicle towing the ramp. The record is based on the total length of the moving cars cleared by the quad bike, regardless of any gaps that may exist between them.
For a complete list of 2013 records, please visit 2013 Guinness Records in United States.