Legality
Alleycats have occurred regularly in major cities all over the world and have expanded to smaller cities and towns over the last few years. As a result of the potentially dangerous nature of the sport as well as widely varying local laws an alleycat is almost never a fully legal endeavor.
In the United Kingdom, organised cycle racing on public roads requires the authority of the police and the relevant sporting organisation. However treasure hunts and time trials are legal.
Otherwise, organizers attempt to put issues of legality in the hands of racers. The decision to break any laws is left to the individual.
Read more about this topic: Alleycat Races