1000grobbe bike is a 3-days bike challenge on the best trails of Alpe Cimbra. On Sunday, the most awaited race: the 100KM DEI FORTI. Roads and trails trough beautiful woods and pastures; trails that gives you unexpected views of the austroungarian fortress of World War I. And, last but not least, steep climbs and adrenaline descends. Only for real bikers!