I'm about to leave the brewery to head for Sturbridge & the Pan Mass Challenge start, and had a spare moment. I decided to spend it doing some math & remembered why I don't like math in the first place. Here's what I've calculated:

PMC=192 miles
192 miles = 1,013,760 ft = 337,920 yards= 308,994 meters.
FG road bike at 42*16= 69 gear inches, or 5.5 m/pedal revolution.
308,994 meters/5.5 meters per stroke = 56,180.734 pedal strokes this weekend.

Not counting side trips to the pub. ;D

I'll let you know Monday if my math was correct...