Every year in a field in West Sussex, UK, the worlds most extreme endurance motorsport race takes place, on Lawnmowers.

Motor racing enthusiasts have been meeting for the annual BLMRA 12 hour endurance race since 1978. The rules are simple, drive a lawnmower around the track for 12 hours straight and the team with the most laps wins. No sponsorship, no commercialism, no cash prizes and no modifying of engines. It’s competitive, dangerous and very, very fun.

This film documents this race and delves deeper into why someone would want to take part in such a bonkers sport, the ethos behind it and what the future holds for the worlds cheapest grassroots motorsport. The first 12-hour endurance race in 1978 was won by racing legend, Sir Stirling Moss.