| Alpena to Rodgau | 4,034.47 mi (6,492.85 km) |
| Alpena to Roding | 4,199.88 mi (6,759.05 km) |
| Alpena to Rodinghausen | 3,934.90 mi (6,332.61 km) |
| Alpena to Roetgen | 3,911.47 mi (6,294.90 km) |
| Alpena to Rommerskirchen | 3,915.40 mi (6,301.23 km) |
| Alpena to Ronnenberg | 3,974.10 mi (6,395.70 km) |
| Alpena to Rosbach vor der Hohe | 4,016.89 mi (6,464.56 km) |
| Alpena to Rosdorf | 4,014.09 mi (6,460.05 km) |
| Alpena to Rosenheim | 4,241.43 mi (6,825.92 km) |
| Alpena to Rosrath | 3,938.46 mi (6,338.34 km) |
| Alpena to Rossdorf | 4,035.90 mi (6,495.15 km) |
| Alpena to Rosstal | 4,132.18 mi (6,650.10 km) |
| Alpena to Rostock | 3,992.22 mi (6,424.85 km) |
| Alpena to Rotenburg an der Fulda | 4,027.35 mi (6,481.39 km) |
| Alpena to Roth | 4,145.97 mi (6,672.30 km) |
