Gudenåen has its spring in Tinnet Krat, Vejle Municipality (between Nørre Snede and Tørring-Uldum) and flows a total of 149 kilometers to Randers Fjord in Randers Miljø og Energiministeriet: Afstrømningsforhold i danske vandløb (2000), p. 16 , on a northward course which takes it through the central parts of Jutland.