on your marks, get set, go!

on your mark(s), get set, go

An instruction to begin something, typically some kind of competition. The phrase is commonly used at the beginning of a race to indicate when the competitors can start. Is everyone ready? OK then, on your mark, get set, go! OK, kids, first one to the other end of the yard and back is the winner. On your marks, get set, go!
See also: get, go, on
Farlex Dictionary of Idioms.

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
Farlex Partner Idioms Dictionary
See also:
  • on your mark(s), get set, go
  • on your mark, get set, go
  • ready, set, go
  • ready, steady, go
  • ready, steady, go!
  • fold, spindle, or mutilate
  • (one's) best foot forward
  • bear in mind (that)
  • bear in mind that
  • and the rest