Organizer Golazo announced yesterday that for the first time the number of participants wil be limited to 16.000. In previous years, a lot of people rode this without paying, but that won't work anymore in 2013. For the first time the organizers will actually close some roads (cobbled sections? Hellingen?) so only the riders who registred will be able to ride them.
Registrations opened today, so if you want to ride this event: better hurry.