| Hednesford to Orbetello | 936.72 mi (1,507.51 km) |
| Hednesford to Oria | 1,249.65 mi (2,011.12 km) |
| Hednesford to Oristano | 1,016.60 mi (1,636.05 km) |
| Hednesford to Orta Nova | 1,140.69 mi (1,835.76 km) |
| Hednesford to Orte | 971.79 mi (1,563.95 km) |
| Hednesford to Ortona | 1,043.28 mi (1,678.99 km) |
| Hednesford to Orvieto | 949.11 mi (1,527.44 km) |
| Hednesford to Orzinuovi | 737.97 mi (1,187.65 km) |
| Hednesford to Osimo | 954.00 mi (1,535.32 km) |
| Hednesford to Ospitaletto | 734.74 mi (1,182.45 km) |
| Hednesford to Ostuni | 1,235.79 mi (1,988.82 km) |
| Hednesford to Ottaviano | 1,125.93 mi (1,812.02 km) |
| Hednesford to Ovada | 738.07 mi (1,187.81 km) |
| Hednesford to Ozieri | 984.65 mi (1,584.64 km) |
| Hednesford to Paceco | 1,233.77 mi (1,985.56 km) |
