I see you listed the climb. Surely you must mean 6500 ft and not 6500 m!
I measured our distance traveled at 49.7 miles - I'm calling it 50.
Oops--right 6500 feet. I measured distance by walking a pair of dividers around our route, which isn't too accurate. If you had a better way (e.g., one of those rolling wheel gizmos), I'll chuck my measurement and use yours.
My distance measurement was very hi-tech: I hand drew our route on the map and used a piece of string.
After correcting for my leaving out the post-hamburger excursion to #22, I think we are astoundingly close in our estimates considering the crude methods.