Awesome pictures! For some reason I really liked the 4th from the top where the guy is walking his horse in the parade ring (?) with loose reins and his hand on his neck. Probably not the safest way to lead a racehorse right before a race but the horse looks so calm and happy. :)
I'm am loving the first pic in that last set (the panorama shot). That is pretty epic!
I love the "socks" (I'm guessing they're like SMBs or wraps or galloping boots or something, but they look like knee-high striped baseball socks!) that chestnut is wearing in the fifth pic from the top.