It depends if the horse has not had food or water before but i think it is.
The horse roughly sleeps 5 hours
I can ride a horse 5 hours in a day.
The duration of The Horse of Pride is 2 hours.
The duration of The Turin Horse is 2.43 hours.
The duration of Year of the Horse is 1.77 hours.
The duration of Horse Feathers is 1.13 hours.
The duration of The Wooden Horse is 1.68 hours.
The duration of The Devil Horse is 3.6 hours.
The duration of The Horse Boy is 1.55 hours.
The duration of A Kingdom For a Horse is 1.6 hours.
The duration of The Horse Thief is 1.47 hours.
The duration of The Horse Soldiers is 1.92 hours.