Trifecta Wheel Calculator
Calculate trifecta part wheel and key box costs. Structure your exotic wagers for maximum efficiency.
Note: This calculates maximum combinations assuming all different horses. If horses overlap between positions, actual combinations will be fewer.
Trifecta Part Wheel Strategy
A part wheel (also called a key box) lets you structure trifecta bets more efficiently than a full box. By assigning different horses to different positions based on your handicapping, you can reduce cost while maintaining coverage on the most likely outcomes.
Common Structures
- 1/3/5: Key one horse to win, use 3 in second, 5 in third
- 2/2/4: Two contenders for win/place, four for show
- 1/ALL/ALL: Key one to win, wheel the field for 2nd and 3rd
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