Sorry for the late response. as far as we can tell, it only works on the Newgrounds 2.0 version. to get the glitch to work, you need to throw your airplane backwards and beneath the ground. it will lag out your game for a bit but thats normal. after its back to normal, just use up all your fuel and watch the distance climb forever. to end the glitch just click on the screen.

timing starts as soon as you click the icon when starting a new file, and splits are made as soon as you click the "skip" button during the animation between levels