maybe you can try
http://bithorse.co i've never even did not know much about bet horse
but it's worth to try
What OP is asking is for a place other than Directbet to bet on actual Horse-races, the ones which involves real Horses and Jockeys.
@OP: I only play at Directbet, I think as others have suggested there might be few sportsbooks which don't deal in BTC but they might offer better odds.
I currently use directbet.eu but they only offer a few racetracks to bet on and there are very few north american tracks to wager on and you only can bet w/p/s. If there are any other sites that offer better horse racing please post names of sites thanks.
Never tried to bet on horse racing, I'm bored.. think I will check it out.
You're going to love it, I started playing it from a week and I am already addicted to it.