Originally Posted by
gamby
4 miles is my magic number. Way too often, I shove off thinking "uh-oh--this ride is gonna suck" and then I hit the 4 mile mark and I'm feeling fine.
I'm kinda like this too. There is some mile mark where things just switch on, then I'm good for the next few hours.
When I go solo, I don't feel this as much (assuming I rate output unconsciously) but when I ride with a group at someone else's warmup pace, I really feel it. I'm a slow starter, but I also notice I have a ton left in the tank when other riders start to fade later in the day.