There is a total of 97195 clues beginning with r
- River that once formed the western border of the Holy Roman Empire
- River that originates in Russia's Valdai Hills
- River that originates in the Ardennes Mountains
- River that passes by Essen, Germany
- River that passes by the Hermitage
- River that passes through Lake Geneva
- River that provides the largest inflow into the Mediterranean
- River that rises in Cantabria
- River that rises in French Flanders
- River that rises in Lake Tana
- River that rises in Monte Falterona
- River that rises in the Apennines
- River that rises in the Ardennes
- River that rises in the Bernese Alps
- River that rises in the Cairngorm Mountains
- River that rises in the Cantabrian Mountains
- River that rises in the Vogesen Mountains
- River that rises in the Vosges
- River that runs by 11 of the 20 largest cities in Russia
- River that runs by the Uffizi
- River that runs from Gloucestershire to Essex
- River that runs near the Leaning Tower of Pisa
- River that runs through 111-Across
- River that runs through 23-Across
- River that runs through 35-Across
- River that runs through 42-Across
- River that runs through 67-Across
- River that runs through 69-Across
- River that runs through 86-Across
- River that runs through 94-Across
- River that runs through Berlin
- River that runs through York
- River that separates North Korea and China
- River that Sherlock Holmes fell into
- River that sounds like a horse
- River that starts at Pico Tres Mares
- River that starts at Pittsburgh
- River that starts at the Vioménil
- River that starts from a Swiss glacier
- River that starts in Pittsburgh
- River that starts in the Graian Alps
- River that starts in the Swiss Alps
- River that starts in the Valdai Hills
- River that the Burma Railway crosses
- River that the dead drank from, in myth
- River that the Ilek joins in Kazakhstan
- River that the infant Achilles was dipped into
- River that turned to blood in Exodus
- River that turns west at Orsk
- River that was notably crossed on Christmas 1776
- River that was the ancient dividing line between Rome and Carthage
- River that was the scene of WWI fighting
- River that's home to 1-Across
- River that's home to the black spot piranha
- River that's the site of Javert's demise in "Les Misérables"
- River the Aswan Dam dams
- River though the Grand Canyon
- River through 25-Across
- River through 7 Down
- River through 91 Down
- River through a Low Country
- River through Alaska
- River through ancient Nubia
- River through Ann Arbor
- River through Aragon
- River through Aswan
- River through Atyrau, Kazakhstan
- River through Avignon
- River through Baghdad
- River through Bath
- River through Bath, England
- River through Battenberg, Germany
- River through Bavaria
- River through Beijing
- River through Belgium
- River through Berlin
- River through Berlin
- River through Bern
- River through Berne
- River through Bismarck
- River through Brandenburg
- River through Bristol
- River through Bristol and Bath
- River through British Columbia
- River through Budapest
- River through Budapest
- River through Burgundy
- River through Cairo
- River through Carlsbad
- River through Carlsbad, NM
- River through Castile and León
- River through Catalonia
- River through central Africa
- River through central Germany
- River through Cologne
- River through Compiègne
- River through Congo
- River through Cumberland
- River through Deutschland
- River through Devon