you are leaving out some salient facts:
(1) 1st ride back since injury in 1.5 years--this was a ride to gauge condition--HR did not exceed about 83% of max at any time--pretty much pegged at 75ish.
(2) average speed includes about 20 miles of climbing for a total of 5900 feet gain in 58 miles (downhill speeds limited because the condition of the road after the 10,000 floods in September)
(3) finishing altitude of the 15 mile climb was 9700 feet
(4) I am 47
(5) average speed on the flats was 21-22
(6) this was a November ride--not May so no one was trying to peak[
(7) I was a solid Cat 2 rider in 2012 (from 2011 numbers)the just requested a downgrade to Cat 3
You're in great shape for 47, congratulations bro