I'd like to see a Garmin 800 file for the elevation profile. Looking at the ride data I bet it has around 7900' total. Whatever. It's still a hilly ride and you will have to pace the hills or they will wear you down as the ride progresses. Sometimes rides that are constantly up and down are harder than those with a few really long big climbs. The reason I think is we tend to want to get over the little ones by powering up them while the big climbs require us to settle into a steady climbing pace that will be sustainable. So the many short climbs become a ride of Z4 intervals and eventually the legs turn to rubber. Watch your effort on those hills, especially early in the ride and you should be fine.