Finally found what I was looking for after wasting $$$ on apps that promised features that they didn’t deliver.
MileTracker from Silverware does everything I was looking for http://www.silverwaresoftware.com/Home.html
I can’t believe how hard it was to find an app that would do what I needed but the folks at Silverware seem to have carefully thought through what is needed and they give you lots of options and fields that can be toggled on and off. It cost 2.99 and then another .99 to turn on the GPS based calculation.
Well worth it.