You win by having the fastest time.
The fastest time I've seen so far for NBHA was 14.658
12.369 ever but it varies everywhere
12.321 seconds is the lowest ever.... but a girl named Amanda somthing won this yr at the 2011 barrel racing champs she got 13.56 fastest yet this yr
13.9 sec is the fastest time ever ran. But yes it does matter by the size of the arena but as long as the barrells are set up at 90,105,105feet its the same size.
@ the Rodeo i go to if you win, you get close to $140 for fastest time
The fastest time usually depends on the arena. Some patterns are bigger or smaller than others and the ground is different causing different effects on you and your horse and giving different times.
You may touch the barrel. If the barrel is knocked over, there is a time penalty.
It depends where they are racing at