on your marks, get set, go!

on your mark, get set, go

A set phrase said at the beginning of a race to mark when the competitors can begin. (In British English, it is more commonly said as "on your marks, get set, go," with the "s" added after "mark.") Is everyone in their positions? OK then, on your mark, get set, go!
See also: get, on

on your ˌmarks, get ˌset, ˈgo!

used to tell runners in a race to get ready and then to start: He raised the starting gun.‘On your marks, get set, go!’ he shouted, and fired into the air.
See also: get, on