| Duluth to Rodgau | 4,262.57 mi (6,859.94 km) |
| Duluth to Roding | 4,421.93 mi (7,116.41 km) |
| Duluth to Rodinghausen | 4,150.50 mi (6,679.59 km) |
| Duluth to Roetgen | 4,143.33 mi (6,668.04 km) |
| Duluth to Rommerskirchen | 4,143.54 mi (6,668.38 km) |
| Duluth to Ronnenberg | 4,186.04 mi (6,736.78 km) |
| Duluth to Rosbach vor der Hohe | 4,243.83 mi (6,829.79 km) |
| Duluth to Rosdorf | 4,230.37 mi (6,808.12 km) |
| Duluth to Rosenheim | 4,472.21 mi (7,197.33 km) |
| Duluth to Rosrath | 4,166.05 mi (6,704.61 km) |
| Duluth to Rossdorf | 4,265.30 mi (6,864.34 km) |
| Duluth to Rosstal | 4,358.01 mi (7,013.54 km) |
| Duluth to Rostock | 4,186.21 mi (6,737.05 km) |
| Duluth to Rotenburg an der Fulda | 4,247.16 mi (6,835.15 km) |
| Duluth to Roth | 4,372.07 mi (7,036.17 km) |
