| Rocky River to Rodgau | 4,139.93 mi (6,662.58 km) |
| Rocky River to Roding | 4,308.25 mi (6,933.46 km) |
| Rocky River to Rodinghausen | 4,049.01 mi (6,516.25 km) |
| Rocky River to Roetgen | 4,015.25 mi (6,461.91 km) |
| Rocky River to Rommerskirchen | 4,021.60 mi (6,472.15 km) |
| Rocky River to Ronnenberg | 4,090.27 mi (6,582.65 km) |
| Rocky River to Rosbach vor der Hohe | 4,123.21 mi (6,635.67 km) |
| Rocky River to Rosdorf | 4,127.28 mi (6,642.22 km) |
| Rocky River to Rosenheim | 4,343.86 mi (6,990.76 km) |
| Rocky River to Rosrath | 4,044.86 mi (6,509.57 km) |
| Rocky River to Rossdorf | 4,140.49 mi (6,663.48 km) |
| Rocky River to Rosstal | 4,238.51 mi (6,821.23 km) |
| Rocky River to Rostock | 4,119.18 mi (6,629.18 km) |
| Rocky River to Rotenburg an der Fulda | 4,138.21 mi (6,659.80 km) |
| Rocky River to Roth | 4,252.05 mi (6,843.02 km) |
