| Thatcham to Orbetello | 852.36 mi (1,371.74 km) |
| Thatcham to Oria | 1,173.63 mi (1,888.78 km) |
| Thatcham to Oristano | 924.32 mi (1,487.55 km) |
| Thatcham to Orta Nova | 1,062.88 mi (1,710.54 km) |
| Thatcham to Orte | 889.90 mi (1,432.16 km) |
| Thatcham to Ortona | 965.34 mi (1,553.56 km) |
| Thatcham to Orvieto | 867.25 mi (1,395.71 km) |
| Thatcham to Orzinuovi | 659.04 mi (1,060.62 km) |
| Thatcham to Osimo | 877.26 mi (1,411.81 km) |
| Thatcham to Ospitaletto | 656.78 mi (1,056.98 km) |
| Thatcham to Ostuni | 1,160.22 mi (1,867.19 km) |
| Thatcham to Ottaviano | 1,044.68 mi (1,681.25 km) |
| Thatcham to Ovada | 653.33 mi (1,051.44 km) |
| Thatcham to Ozieri | 893.53 mi (1,438.00 km) |
| Thatcham to Paceco | 1,144.95 mi (1,842.62 km) |
