Split the group into partners, everyone with a mit. Partners starts 1m away, facing each other.
Everytime they have a successful catch, they take one step back. If the ball is dropped or missed, they take a step forward. At the end of the time, the partners that are the furtherst distance apart win.
Note: players should be catching with their mit, and throwing with their free hand. If player catches it in hand without mit this does not count as a successful throw and catch.