One of our guests mentioned that on his recent trip he paid $100 for a weeks access to the Grand Wailea work out facility which he said was a great place to work out. 

I tend to run every day while I am there, as I really enjoy running on the pathway in front of all of the spectacular hotels.  You can get there by beach, but I prefer to run up the hill from 5A to the main road (Wailea Alanui) where I turn right and then head down to the beach/path at Elua Beach.  The round trip down to the Fairmont Kea Lani is probably about 3 miles.