The tradition goes back hundreds of years but was cancelled last year because it is a bit dangerous.
The chasers race down a very steep hill to try and be the first to heavy Double Gloucester cheeses rolling away.
A rescue team is normally on hand to help keep people safe but last year they were busy in Algeria helping to sort things out after an earthquake.
This year a new team is in place so the event goes ahead.
Each year loads of people go Cooper's Hill, near Brockworth, to try and take part in the races.
The winner of each race gets to keep the giant cheese they were chasing down the hill.