| Grove City to Orbetello | 4,631.30 mi (7,453.36 km) |
| Grove City to Oria | 4,979.37 mi (8,013.52 km) |
| Grove City to Oristano | 4,614.55 mi (7,426.39 km) |
| Grove City to Orta Nova | 4,864.68 mi (7,828.94 km) |
| Grove City to Orte | 4,680.06 mi (7,531.83 km) |
| Grove City to Ortona | 4,768.71 mi (7,674.50 km) |
| Grove City to Orvieto | 4,658.43 mi (7,497.03 km) |
| Grove City to Orzinuovi | 4,466.77 mi (7,188.58 km) |
| Grove City to Osimo | 4,685.81 mi (7,541.08 km) |
| Grove City to Ospitaletto | 4,466.84 mi (7,188.69 km) |
| Grove City to Ostuni | 4,967.47 mi (7,994.37 km) |
| Grove City to Ottaviano | 4,832.37 mi (7,776.95 km) |
| Grove City to Ovada | 4,441.05 mi (7,147.18 km) |
| Grove City to Ozieri | 4,606.86 mi (7,414.03 km) |
| Grove City to Paceco | 4,865.02 mi (7,829.50 km) |
