| Grafton to Orbetello | 4,686.00 mi (7,541.39 km) |
| Grafton to Oria | 5,024.74 mi (8,086.54 km) |
| Grafton to Oristano | 4,689.93 mi (7,547.71 km) |
| Grafton to Orta Nova | 4,911.86 mi (7,904.87 km) |
| Grafton to Orte | 4,731.31 mi (7,614.30 km) |
| Grafton to Ortona | 4,814.69 mi (7,748.49 km) |
| Grafton to Orvieto | 4,709.13 mi (7,578.62 km) |
| Grafton to Orzinuovi | 4,509.22 mi (7,256.88 km) |
| Grafton to Osimo | 4,728.65 mi (7,610.02 km) |
| Grafton to Ospitaletto | 4,508.06 mi (7,255.03 km) |
| Grafton to Ostuni | 5,011.88 mi (8,065.84 km) |
| Grafton to Ottaviano | 4,885.64 mi (7,862.67 km) |
| Grafton to Ovada | 4,491.07 mi (7,227.68 km) |
| Grafton to Ozieri | 4,677.53 mi (7,527.76 km) |
| Grafton to Paceco | 4,938.29 mi (7,947.42 km) |
