| Rietavas to Oerlinghausen | 598.40 mi (963.04 km) |
| Rietavas to Oestrich-Winkel | 700.77 mi (1,127.78 km) |
| Rietavas to Offenburg | 774.75 mi (1,246.84 km) |
| Rietavas to Oftersheim | 709.94 mi (1,142.53 km) |
| Rietavas to Ohrdruf | 571.83 mi (920.28 km) |
| Rietavas to Ohringen | 688.67 mi (1,108.31 km) |
| Rietavas to Olbernhau | 497.81 mi (801.15 km) |
| Rietavas to Olching | 687.00 mi (1,105.62 km) |
| Rietavas to Oldenburg | 578.21 mi (930.54 km) |
| Rietavas to Oldenburg in Holstein | 448.11 mi (721.16 km) |
| Rietavas to Olfen | 654.32 mi (1,053.02 km) |
| Rietavas to Olpe | 664.12 mi (1,068.80 km) |
| Rietavas to Olsberg | 627.89 mi (1,010.48 km) |
| Rietavas to Oranienburg | 406.05 mi (653.47 km) |
| Rietavas to Ortenberg | 649.14 mi (1,044.68 km) |
