I had a horse who was a surviver of EPM. He
went on to do 25 mile rides with no problem. I always did see some effects
of the EPM in him though. He made square turns and his right hind leg
would bother him after 25s. I attributed the right hind lameness to the
grape vine incident. The square turns I attributed to the EPM. The
only way you are going to know if this horse will hold up is just go out and do
the rides. I would do a season of 25s though with some back to back.
Give the horse a season to get his muscles back in shape and a season to build
those muscles. Jeanie