Nice ride.  How many hours in the saddle?  It looks like the last 30 miles were kind to you but that stretch from 40 to 80 miles must've been pretty serious.  I love climbing and wish there was more of that sort of stuff out my way.  I was on a group ride with a bunch from Minneapolis a few years ago out in Wisconsin.  They've got some killer hills out there but nothing more than a few k in length...anyway, we found this hill behind a gas station where you had to traverse the road sideways before you could point your bike straight up the road.  I remember having to have just the right balance or your front wheel would lift off if you were sitting too far back...to far forward and your rear tire would spin out in the light amount of sand and gravel on the road.  That was before I got a cyclocomputer with elevation information and the ability to tell you the grade of climb. 

Ed...what are you riding?  I'm using a Garmin Edge 305 to track my data and it is amazing. 

Kevin g