Thank you, Philadelphia. 76 is always clogged with traffic, Kelly Drive's bike/pedestrian path is almost constantly too crowded to really ride with any speed or fitness benefits, but from noon to five on Saturdays and Sundays, West River Drive is a cyclist's dream come true. No cars allowed. Lots of lots of open road. Right along the river.
Serious cyclists in funky colored spandex mix with us, casual weekend riders, and sometimes, if you look closely, even miniature horses pulling carriages.
So, I love Philadelphia thanks to West River's no-car-weekend-hours!