Originally Posted by PaintsTheWorld
my gelding isnt broke
Well, that tidbit of information would certainly help. By "show condition" most here would assume you mean for riding classes. We can't read your mind.
In that case, 15-20 minutes of lunging at the walk and trot, with a little canter, 2-3 times a week. The rest of the time you can take him on "walks" in hand on the trail or pony him from another horse on the trail. Lots of turnout time is important too, so he the freedom to exercise on his own.