Lahn

4.64

Dorlar

6

Garbenheim

8.05

Naunheim

12

Wetzlar

12.2

12.22

Federal waterway

16.49

Altenberg

19.26

Oberbiel

20.26

Niederbiel

25

Leun

28.5

Stockhausen

36.26

Löhnberg

39

Weilburg tunnel

41.32

Weilburg staircase

44

Odersbach

45.54

Kirschhofen

51.2

Fürfurt

54.5

Aumenau

59.5

Arfurt

62.55

Villmar

65.29

Runkel

70

71.5

Marina Dehrn

73

Dietirchen

76.6

Limburg

83.23

Diez

83.5

91

Balduinstein

91.83

Cramberg

96.78

Scheid

110

Obernhof

105.8

Kalkhofen

113.1

Hollerich

117.62

Nassau

121

Dausenau

122.37

Dausenau

126.99

Bad Ems

129.28

Nievern

133.1

Ahl

135.96

Lahnstein

137

Rhine

km

The Lahn (German pronunciation:) is a 245.6-kilometre-long (152.6 mi), right (or eastern) tributary of the Rhine in Germany. Its course passes through the federal states of North Rhine-Westphalia (23.0 km), Hesse (165.6 km), and Rhineland-Palatinate (57.0 km).

It has its source in the Rothaargebirge, the highest part of the Sauerland, in North Rhine-Westphalia. The Lahn meets the Rhine at Lahnstein, near Koblenz. Important cities along the Lahn include Marburg, Gießen, Wetzlar, Limburg an der Lahn, Weilburg and Bad Ems.

Tributaries to the Lahn include the Ohm, Dill, the Weil and the Aar. The lower Lahn has many dams with locks, allowing regular shipping from its mouth up to Runkel. Riverboats also operate on a small section north of the dam in Gießen.