I 100% agree with all the horse safety comments. Most the time after a 2-3 hour ride my horses still won’t drink water when led to it. To ride in one day, pack 10 gallons or so for 2 horses, and ride back out the next day does not seem like a stretch to me. I just wasn’t sure of the best way to load that 10 gallons on a horse (in a separate trip than the overnight trip).