For the past seven months I have been a Jimmy John's bicycle delivery driver. I am 20-25 years older than almost all the other bikers. Earlier this week while I was a mile from the store, I found myself half a block behind a coworker that rode a single speed 700C bike. I did not try to close the gap, instead I tried to keep the gap constant until we got into downtown. Once in town I was able to hop curbs, ride on the sidewalk and turn on a dime ( to get through red lights ). I beat him by at least 30 seconds.

The 700C single speed bike was faster on long flats, but my folder was much faster in town. FYI the other biker is super fit, he's a certified personal trainer & an athlete.

Thanks,
Yan