| Baldock to Orbetello | 847.54 mi (1,363.98 km) |
| Baldock to Oria | 1,158.49 mi (1,864.41 km) |
| Baldock to Oristano | 933.88 mi (1,502.94 km) |
| Baldock to Orta Nova | 1,049.70 mi (1,689.34 km) |
| Baldock to Orte | 881.70 mi (1,418.95 km) |
| Baldock to Ortona | 952.33 mi (1,532.63 km) |
| Baldock to Orvieto | 859.01 mi (1,382.45 km) |
| Baldock to Orzinuovi | 647.31 mi (1,041.75 km) |
| Baldock to Osimo | 862.94 mi (1,388.77 km) |
| Baldock to Ospitaletto | 643.91 mi (1,036.27 km) |
| Baldock to Ostuni | 1,144.61 mi (1,842.07 km) |
| Baldock to Ottaviano | 1,035.60 mi (1,666.64 km) |
| Baldock to Ovada | 649.27 mi (1,044.90 km) |
| Baldock to Ozieri | 900.39 mi (1,449.03 km) |
| Baldock to Paceco | 1,147.01 mi (1,845.94 km) |
