Me. I do endurance riding (won all the novice trophies last year in my group!) and I LOVE it! I have Malachy - an ex-racer (Taro Prince Ire) who is 17hh, 14yrs old bay gelding. Owned him for four years, and he loves endurance too.
This year we're upping our distances, and have planned in a 50km in March, a couple of 65kms in the summer and an 80km at the end of the summer, as well as some two and three day comps where we'll (hopefully) be doing about 120km over the days. Great for weight loss, and spurred me to lose all of this - afterall, the poor thing has to carry this for miles!!!