A parkour long jump is not significantly different from the long jump practiced in track and field. You leap off the ground after a sufficient running start, then position both legs in front of you in preparation for the landing. As with other long jumps, the key is in your approach to the jump. A jump at the wrong point in your running rhythm will be short and sloppy. Practicing approaches is the best way to learn how your physical rhythm interacts with your jumping form.
