if you are 14 you can do ministox
as long as have pubic hair they will let you race
Almost certainly as old as the domesticated history of the horse - believed to be about 6000 years.
You have to be about 5 or older to barrel race. Barrel racing horses are pretty fast! So it has to be older than 5.
over 3yrs of age
i race pro-kart and i moved up from cadets at the age of 12 but if you already race i think you can move up at 11 ( i race in MSA meetings)