What is the name of zac efrons horse movie?

Zac Efron has not been in a horse movie. He is known for his roles in films like:

* High School Musical

* Hairspray

* The Greatest Showman

* Baywatch

* Extremely Wicked, Shockingly Evil and Vile

* The Greatest Beer Run Ever

There are many horse movies, but none that star Zac Efron.