My father and I will be starting a horse pack trip from Mexico to Canada, using much of the Arizona Trail (passage 28-on - 333.2 miles) in April 2015 (a couple weeks from now). We hope to arrive at the South Rim about the end of May. After reading the information available regarding equine use of the trails, it appears the restrictions are minimal and normal for national parks, which pleases me greatly. I have never hiked the GC, so I'm unfamiliar with the trails. The AZT Interactive Maps show the entire passage, from rim-to-rim, to be about 60 miles, although that includes several miles before starting the descent and several more after reaching the North Rim. We had hoped to make the trip down one day, camp at the bottom, then make the ascent up the North Rim the second day. Is that reasonable? I am aware of the required coordination with the outfitter concessions.
We will have 4-6 horses, depending on our logistical support at that time (two horses under saddle and 2-4 pack horses). Are there any considerations we should be aware of that are not specifically spelled out in the regulations?