That's a mighty fast walking pace, especially with a bad back. Glad to hear it's getting better.
We've got less than 4 months to the Big Seven Oh, so, alas, we'll have to expect more of the bad backs, legs, and other parts. Hopefully at least the brains will hold out for a while longer.
Maybe we should have a So Long Sixty Nine celebration while you're out here. Georgie can join in on that, too.