| Ottumwa to Rheinbach | 4,460.96 mi (7,179.23 km) |
| Ottumwa to Rheinberg | 4,412.96 mi (7,101.97 km) |
| Ottumwa to Rheine | 4,413.91 mi (7,103.50 km) |
| Ottumwa to Rheinfelden (Baden) | 4,614.71 mi (7,426.66 km) |
| Ottumwa to Ribnitz-Damgarten | 4,505.06 mi (7,250.19 km) |
| Ottumwa to Richterich | 4,422.04 mi (7,116.59 km) |
| Ottumwa to Riedlingen | 4,652.96 mi (7,488.21 km) |
| Ottumwa to Riegelsberg | 4,513.22 mi (7,263.33 km) |
| Ottumwa to Rielasingen-Worblingen | 4,646.89 mi (7,478.44 km) |
| Ottumwa to Riesa | 4,655.85 mi (7,492.86 km) |
| Ottumwa to Rietberg | 4,467.85 mi (7,190.30 km) |
| Ottumwa to Rinteln | 4,474.91 mi (7,201.68 km) |
| Ottumwa to Ritterhude | 4,424.47 mi (7,120.49 km) |
| Ottumwa to Rodenbach | 4,555.20 mi (7,330.88 km) |
| Ottumwa to Rodental | 4,621.98 mi (7,438.36 km) |
