TOSRV, from Columbus to Portsmouth, Ohio and back, 105 miles each way (give or take) every Mother's Day weekend.

Back in the '80s and '90s there were 5-6000 riders. Even though it was great fun, it was really getting kind of out of control. Lately it's more like 2500-3000. I don't know whether that's because of declining interest or by design. Back in the day, if you didn't send in your SASE before registration opened, and then send your entry form back the day you got it, you probably wouldn't get in, it would fill up that fast.

The first TOSRV was just a trip that Greg Siple and his father took together in 1962. Greg and a few others went on to found Bikecentennial, which evolved into Adventure Cycling.