The next Mud Monsters Run events take place on variours dates you can see all our current events here. All events are held at the Mud Monsters site in East Grinstead, West Sussex. You can choose whether to run 5k, 10k or 20k (two laps of 10k route). It consists of a fun challenging run through the lovely Sussex countryside, which combines fields, woods, puddles, swamps and streams with lots of challenges and obstacles along the way and of course mud, mud and more mud. At the end every runner will get a medal to prove that you made it as well as a goody bag, free photos and more.