I went for a 40 mile ride yesterday over part of the same route as this 80 mile ride I took a few weeks ago.
I seemed to be more tired at the 40 mile ride than I was at the end of the 80 miler. I'm surprised there's so much inconsistency in my endurance.
Carried U lock
Rode with wife
Stopped for light lunch mid-ride
Hadn't gotten a lot of sleep the night before