| Witham to Orbetello | 813.92 mi (1,309.88 km) |
| Witham to Oria | 1,122.29 mi (1,806.15 km) |
| Witham to Oristano | 905.17 mi (1,456.73 km) |
| Witham to Orta Nova | 1,013.92 mi (1,631.74 km) |
| Witham to Orte | 847.14 mi (1,363.34 km) |
| Witham to Ortona | 916.63 mi (1,475.17 km) |
| Witham to Orvieto | 824.46 mi (1,326.85 km) |
| Witham to Orzinuovi | 612.12 mi (985.12 km) |
| Witham to Osimo | 827.01 mi (1,330.95 km) |
| Witham to Ospitaletto | 608.46 mi (979.23 km) |
| Witham to Ostuni | 1,108.33 mi (1,783.68 km) |
| Witham to Ottaviano | 1,000.73 mi (1,610.52 km) |
| Witham to Ovada | 616.13 mi (991.57 km) |
| Witham to Ozieri | 870.63 mi (1,401.15 km) |
| Witham to Paceco | 1,115.30 mi (1,794.90 km) |
