The horses run fast around the tick tack.
tick tack
idiom Slang
Cockney rhyming slang · East London
the track
Origin
A horse racing term relating to the "tic tac" signals made by bookmakers.
He spends every Saturday morning at the tick tack watching the local athletes practice their sprints.
The veteran trainer stood quietly by the fence, observing how the young horse handled the curves of the tick tack during its first morning run.