The FIM published the supplementary regulations
http://www.mc-roggenburg.ch/
Route to Roggenburg with Google maps: https://goo.gl/maps/mKsY7AJAHBv
Website from the organiser: GP12 Roggenburg, CH - Info and more
Moderators: Chris Helm, Rien.nl
Re: GP12 Roggenburg, CH - Info and more
Entry list on the website from the organiser availiable: http://www.mc-roggenburg.ch/