| Ottendorf-Okrilla to Oria | 760.01 mi (1,223.11 km) |
| Ottendorf-Okrilla to Oristano | 818.53 mi (1,317.30 km) |
| Ottendorf-Okrilla to Orta Nova | 686.33 mi (1,104.54 km) |
| Ottendorf-Okrilla to Orte | 606.22 mi (975.62 km) |
| Ottendorf-Okrilla to Ortona | 610.64 mi (982.73 km) |
| Ottendorf-Okrilla to Orvieto | 590.12 mi (949.71 km) |
| Ottendorf-Okrilla to Orzinuovi | 437.42 mi (703.96 km) |
| Ottendorf-Okrilla to Osimo | 531.98 mi (856.13 km) |
| Ottendorf-Okrilla to Ospitaletto | 424.90 mi (683.82 km) |
| Ottendorf-Okrilla to Ostuni | 743.70 mi (1,196.88 km) |
| Ottendorf-Okrilla to Ottaviano | 714.35 mi (1,149.64 km) |
| Ottendorf-Okrilla to Ovada | 511.29 mi (822.85 km) |
| Ottendorf-Okrilla to Ozieri | 767.44 mi (1,235.08 km) |
| Ottendorf-Okrilla to Paceco | 913.87 mi (1,470.73 km) |
| Ottendorf-Okrilla to Pachino | 1,001.23 mi (1,611.32 km) |
