A bicycle race typically organized by bicycle messengers or couriers. Alleycat races seek to replicate some of the duties that a working messenger might encounter during a typical day. The races usually consist of previously undisclosed checkpoints, which are listed on a manifest, that a racer will have to go to; once at the checkpoint, the racer will have their manifest updated. First racer to return with a completed manifest wins. Alleycats were first formalized in Toronto, Ontario, Canada, in 1989; however, messengers have been racing against each other for much longer. Recently, with the boom in urban cycling, many non-messengers have been participating in and organizing alleycat races.