The Leine-Heide Cycle Path (German: Leine-Heide-Radweg) is a long-distance cycle path in Germany that has a total length of 410 kilometres (250 mi) and runs through the German federal states of Thuringia, Lower Saxony and Hamburg. Until 2009 it was called the Leine Cycle Path after the River Leine and ended north of the river's confluence with the Aller in Hodenhagen.
The cycle path starts in Leinefelde (Thuringia) and ends in the city of Hamburg, passing through the following places: Heiligenstadt, Göttingen, Northeim, Einbeck, Kreiensen, Freden (Leine) Alfeld, Gronau, Sarstedt, Hanover, Neustadt am Rübenberge, Schwarmstedt, Walsrode, Soltau, Schneverdingen, Buchholz in der Nordheide.
The Leine-Heide Cycle Path starts at the source of the river Leine near Leinefelde in the Thuringian region of Eichsfeld and ends in Hamburg's old town (Altstadt). It follows the course of the Leine usually at a distance of a few hundred metres; in several places it runs immediately alongside the river. As a result, the path has few inclines. After the Leine discharges into the Aller the route follows the course of the Aller and then swings east near Ahlden. After crossing the Aller it runs through the Lüneburg Heath to Hamburg.