How to use the results
- Setting up a lane: measure from the start line to each hurdle mark (open “Hurdle marks from the start line”). Most tracks have colored marks for common races.
- Hurdle orientation: the feet of the hurdle point toward the approaching athlete.
- Height: measure the top of the bar. Notch numbers vary by manufacturer, so don’t rely on them.
- Training: for practice with shorter spacing, use the training spacing calculator.
Governing bodies included
| Organization | Covers | Details |
|---|---|---|
| AAU | Youth club track, ages 11–18, indoor and outdoor | AAU hurdle heights |
| USATF | Youth club track (Junior Olympics), 11–12 to 17–18 | USATF hurdle heights |
| NFHS | U.S. high school | High school hurdle heights |
| NCAA | U.S. college | Hurdle heights |
| World Athletics | International senior, U20 and U18 | Hurdle heights |
Specifications are kept separate by organization and never combined. All values were last reviewed against the sources on September 24, 2026.
Frequently asked questions
Are AAU and USATF hurdle heights the same?
Mostly, but not entirely. The main difference is 13–14 boys in the 100m hurdles: AAU uses 33 inches and USATF has used 36 inches since 2025. AAU also uses single-year age divisions for ages 11–14, while USATF uses two-year divisions. The calculator keeps them separate so the two are never mixed.
How accurate is this calculator?
Every specification comes from the governing body’s published documents, listed under each result along with the date it was last reviewed. Meets can occasionally use variations, so confirm with the meet information for the specific competition.
Why is there no option for 10-and-under?
The current AAU handbook and USATF youth rules used here don’t list hurdle races for 10-and-under divisions. Some local meets run them anyway, with their own setups.