| Ionia to Rodgau | 4,191.55 mi (6,745.65 km) |
| Ionia to Roding | 4,357.67 mi (7,012.99 km) |
| Ionia to Rodinghausen | 4,093.79 mi (6,588.32 km) |
| Ionia to Roetgen | 4,068.12 mi (6,547.00 km) |
| Ionia to Rommerskirchen | 4,072.60 mi (6,554.22 km) |
| Ionia to Ronnenberg | 4,133.42 mi (6,652.10 km) |
| Ionia to Rosbach vor der Hohe | 4,174.16 mi (6,717.65 km) |
| Ionia to Rosdorf | 4,172.82 mi (6,715.51 km) |
| Ionia to Rosenheim | 4,397.91 mi (7,077.75 km) |
| Ionia to Rosrath | 4,095.71 mi (6,591.41 km) |
| Ionia to Rossdorf | 4,192.78 mi (6,747.63 km) |
| Ionia to Rosstal | 4,289.50 mi (6,903.28 km) |
| Ionia to Rostock | 4,153.54 mi (6,684.48 km) |
| Ionia to Rotenburg an der Fulda | 4,185.60 mi (6,736.08 km) |
| Ionia to Roth | 4,303.24 mi (6,925.40 km) |
