Get ready for a day packed with energy, excitement and giant inflatables as the Inflatable 5K comes to Chelmsford. This hugely popular event transforms traditional running into a fun filled adventure, featuring massive inflatable obstacles that create an unforgettable experience. If you're searching for a fun run in Chelmsford, a 5k Chelmsford event or an inflatable obstacle course in Essex, this is the one you won't want to miss.