Mud Monsters Run began in 2014 and has seen thousands of muddy runners cross the finish line since then all with one thing in common...a big muddy smile! Whether you choose to do the 7km or 14km distance you can be certain you will have a brilliant day out. We are based in East Grinstead, just 20 minutes from the M25 J6, so you will go one an adventure through the West Sussex countryside with many muddy obstacles on the way. Our runs are great value for money and every runner will get a free medal, free photos and loads more! Don't miss out, sign up now. Click here to find out more about us.