I forgot the most important part, but you got it!!! Preparation! Hhahahaha Lots and lots of hills. (walking them actually builds more muscles than going faster up them) Also, doing distance days and sprint days are useful....kind of think of it like training a human runner for a marathon!
Wow thanks everyone for the great advice. What would be a good training schedule for a 50 mile, we have succesfully completed one 25 mile race finishing 5th out of 61 riders, she did really well on her vet checks I think maybe 1 b at the end for dehydration. Also when we get to new places she wont drink or eat hardly anything, is there anything I can get that will be to hard to resist for her to eat? And something to prompt her to drink? Where can I get electrolytes? I see people at the races mixing there own...is that better? How could I do that?
I read someplace that if you get them used to the taste of gatorade mix (or koolaid mix or something flavored) in their water at home, you can put the same in the water away from home and they are more likely to drink it. Of course that doesn't solve the problem of getting them to drink out of creeks/rivers on trail, but at least they will drink at the checkpoints.
Are there many QH's in Endurance? I always kinda thought it was pretty much an Arabian horse sport :) Do you think my mare looks like she could give Endurance a try? We do lots of long trail rides and have won several hunter paces now (but those are only a few miles long, although VERY fast paced!)...what speed are you normally travelling in Endurance competitions (low level)?
By the way, she's been barefoot her whole life, she has ROCK HARD tootsies ;) I keep asking the farrier if she needs shoes yet, as we've been jumping now for almost 2 years, but he says no, she's doing fine! :) If we go out on a really torn up trail with a bunch of crushed limestone I'll sometimes put her Simple Boots on the front, just to be safe.
It would depend on if you wanted to to just have fun or compete competatively, almost all horses can complete 25 miles with no problem. Going past that with such a heavy built horse I would think would be pushing it.