High Quality Content by WIKIPEDIA articles! A run-off area is an area on a racetrack for racer safety. Run-off areas are usually located along a race course where racers are most likely to unintentionally depart from the prescribed course. It is also known as a gravel trap or, informally, kitty litter (due to resemblance) – see glossary of motorsport terms. Run-off areas are an alternative to catch fences.