| Weston to Orbetello | 994.21 mi (1,600.02 km) |
| Weston to Oria | 1,304.48 mi (2,099.36 km) |
| Weston to Oristano | 1,075.29 mi (1,730.52 km) |
| Weston to Orta Nova | 1,196.18 mi (1,925.06 km) |
| Weston to Orte | 1,028.61 mi (1,655.39 km) |
| Weston to Ortona | 1,098.87 mi (1,768.46 km) |
| Weston to Orvieto | 1,005.93 mi (1,618.89 km) |
| Weston to Orzinuovi | 794.13 mi (1,278.03 km) |
| Weston to Osimo | 1,009.27 mi (1,624.27 km) |
| Weston to Ospitaletto | 790.61 mi (1,272.37 km) |
| Weston to Ostuni | 1,290.48 mi (2,076.83 km) |
| Weston to Ottaviano | 1,182.50 mi (1,903.06 km) |
| Weston to Ovada | 795.74 mi (1,280.62 km) |
| Weston to Ozieri | 1,043.31 mi (1,679.04 km) |
| Weston to Paceco | 1,292.14 mi (2,079.49 km) |
