The Encyclopedia of Arda - an interactive guide to the world of J.R.R. Tolkien
The regions east of Mirkwood
Beneath Erebor, the Lonely Mountain
Into the Sea of Rhûn
Other Names
This river is usually called the 'River Running', but from time to time, particulary in The Hobbit, it is referred to as the 'Running River'. The two terms are interchangeable.


About this entry:

  • Updated 31 March 2001
  • Updates planned: 5

River Running

The river that flowed out of the Lonely Mountain

Also called the Celduin, the Running was a great river that formed the eastern boundary of Rhovanion. It rose beneath Erebor, the Lonely Mountain, and flowed southeastwards for many hundreds of miles to its outflow into the Sea of Rhûn.

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