I'll watch.

it has not yet started
a get a hotdog there starting selling them
b enter a horse
c leave

I'll enter Smoke, my thoroughbred since thoroughbreds are great racehorses.

you enter smoke he gets the number 1 blanket [or whatever there called] now in this race you ride not somebody else if i had a horse i'd ride myself
a groom him
b practice
c start putting tack on him

I'll practice but make sure he'll still have lots of energy for the race.

you practice and smoke seems to be pretty fast crossing the finish line in 30 minutes
a practice more smoke can go faster
b shot yippee
c groom him
d do 2

(err, how long is this race? Realistically, most races last less than a minute.)

I'll practice a bit more, but then settle down and groom him because I don't want to tire him out.

[a minute]
you practice he beats his personal best and finishes in a minute and then you groom him almost time [not really i need 4 more players to join the race before it starts]
a get some tack on him [bridle saddle and fly bonnet polo wraps are optional]
b pet him
c feed him a carrot

I'll pet him, tell him he's a good boy and let him rest until it's a couple minutes until the race, then put on his tack.

good boy you tell him as you pet him and let him rest your hungry
a get a hotdog there's still time
b maybe there's a restaurant near by go look for one
c rest and read a book