5 borough bike tour 13, by i'mjustsayin at flickr With approximately 30,000 participants, it's not unexpected that a few cyclists might get in an accident during the 5 Boro Bike Tour. Still, it's alarming to read emergency wire updates like the report that there was an accident on the Queens side of the upper level of the Queensboro Bridge. Multiple cyclists are down and the extent of injuries is still unkown.......