| Ottumwa to Rodgau | 4,555.21 mi (7,330.90 km) |
| Ottumwa to Roding | 4,718.98 mi (7,594.46 km) |
| Ottumwa to Rodinghausen | 4,451.57 mi (7,164.10 km) |
| Ottumwa to Roetgen | 4,433.15 mi (7,134.47 km) |
| Ottumwa to Rommerskirchen | 4,436.01 mi (7,139.06 km) |
| Ottumwa to Ronnenberg | 4,489.58 mi (7,225.28 km) |
| Ottumwa to Rosbach vor der Hohe | 4,537.26 mi (7,302.02 km) |
| Ottumwa to Rosdorf | 4,531.09 mi (7,292.09 km) |
| Ottumwa to Rosenheim | 4,763.18 mi (7,665.60 km) |
| Ottumwa to Rosrath | 4,458.93 mi (7,175.95 km) |
| Ottumwa to Rossdorf | 4,557.02 mi (7,333.81 km) |
| Ottumwa to Rosstal | 4,652.36 mi (7,487.25 km) |
| Ottumwa to Rostock | 4,501.06 mi (7,243.76 km) |
| Ottumwa to Rotenburg an der Fulda | 4,545.52 mi (7,315.31 km) |
| Ottumwa to Roth | 4,666.25 mi (7,509.60 km) |
