The FIM published the supplementary regulations for Rudersberg, GER
https://msc-wieslauftal.de/
Route to Rudersberg with Google maps: https://goo.gl/maps/VwFUkujCLbtNYoat9
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Also the entry list is published:
Website from the organizer: GP13 Rudersberg, GER - info and more
Moderators: Chris Helm, Rien.nl