The German association, Adfc-dachgeber, with 3000 members, who can host you everywhere in Germany and abroad.
Click on the picture below to enlarge the view of all the foreigner host of this german association, and by the way my localisation on this map.
Cycliste platform with running race : phortail.org
AuxBellesEscales is present on Waffenradforums.net
I bike Budapest 2019 (28th April)