Originally Posted by
dddavid
too many variables in your post to give you a decent answer. but I suggest using this site:
http://www.gmap-pedometer.com/
it's accurate enough and easy to use
I recommend
Ride with GPS. Requires free account, gives you good elevation/grade numbers, and you can export the route easily (can upload to many Garmin GPS devices). I've used gmap-pedometer for many years and like it too (although I like ride with GPS more).
Cheers,
Charles