I think the least you should do (if you haven't already) is to ask the organiser if he minds you turning up at his event......I believe that this is perfectly normal for most sporting events is it not???

As an organiser of Rollapaluza, I would say that we consider it usual for journalists to contact us in advance of events and all pro photographers to arrange permission in advance or at least make themselves known on the night....in fact we will have journalists from a well-respected cycling publication at Rollapalpuza on the 25th, they have been in contact with us for over three months and as such we are more than happy to grant them interview time and photoshoot before the main event.

As Joel points out Movingtarget will be the forum to track down the organisers.

Some people on this forum are getting a little tired of people selling things, doing coroporate "research" and other commercial stuff, especially if it is their first post.