| Haydock to Orbetello | 992.81 mi (1,597.78 km) |
| Haydock to Oria | 1,302.04 mi (2,095.43 km) |
| Haydock to Oristano | 1,075.26 mi (1,730.46 km) |
| Haydock to Orta Nova | 1,193.95 mi (1,921.47 km) |
| Haydock to Orte | 1,026.89 mi (1,652.62 km) |
| Haydock to Ortona | 1,096.68 mi (1,764.94 km) |
| Haydock to Orvieto | 1,004.21 mi (1,616.12 km) |
| Haydock to Orzinuovi | 792.17 mi (1,274.87 km) |
| Haydock to Osimo | 1,006.99 mi (1,620.59 km) |
| Haydock to Ospitaletto | 788.55 mi (1,269.05 km) |
| Haydock to Ostuni | 1,288.00 mi (2,072.83 km) |
| Haydock to Ottaviano | 1,180.67 mi (1,900.10 km) |
| Haydock to Ovada | 794.46 mi (1,278.56 km) |
| Haydock to Ozieri | 1,043.01 mi (1,678.57 km) |
| Haydock to Paceco | 1,291.36 mi (2,078.25 km) |
