Racetrax, then your Racetrax Bonus wager is *For the Show, Win/Show, Quinella, Trifecta (includes Trifecta, Trifecta Box and Trifecta Wheel), Exacta (includes Exacta, Exacta Box and Exacta Wheel), and Superfecta (includes Superfecta, Superfecta Box and Superfecta Wheel) Bet Types, the probability and prize payout are derived from each horses probability of placing 1st. (Minimum bet per ticket = $1) For example, Preakness trifecta box payout was 149.30 USD in 2019 for a 1 USD/3 horse bet. bettor may bet a minimum of three horses on a single ticket, giving the bettor horses selected for you.