An easy place to jump 65m is in DiRT Academy. This jump spot can be done with almost any decent car in the game. Once you spawn in the DiRT Academy, look to your right to see a small bump on the road. If you hit the bump from the side, it will send your car over 65 meters in the air. Back up in front of the jump to gain a good amount of speed to easily jump 65 meters and get the "Real Turbulent Juice" achievement.