| West Carrollton to Orbetello | 4,689.58 mi (7,547.15 km) |
| West Carrollton to Oria | 5,037.00 mi (8,106.26 km) |
| West Carrollton to Oristano | 4,674.37 mi (7,522.68 km) |
| West Carrollton to Orta Nova | 4,922.42 mi (7,921.87 km) |
| West Carrollton to Orte | 4,738.08 mi (7,625.20 km) |
| West Carrollton to Ortona | 4,826.32 mi (7,767.21 km) |
| West Carrollton to Orvieto | 4,716.40 mi (7,590.31 km) |
| West Carrollton to Orzinuovi | 4,523.98 mi (7,280.64 km) |
| West Carrollton to Osimo | 4,743.13 mi (7,633.33 km) |
| West Carrollton to Ospitaletto | 4,523.94 mi (7,280.58 km) |
| West Carrollton to Ostuni | 5,025.01 mi (8,086.98 km) |
| West Carrollton to Ottaviano | 4,890.60 mi (7,870.66 km) |
| West Carrollton to Ovada | 4,498.89 mi (7,240.26 km) |
| West Carrollton to Ozieri | 4,666.35 mi (7,509.77 km) |
| West Carrollton to Paceco | 4,924.77 mi (7,925.65 km) |
