| Forest Hill to Orbetello | 5,553.12 mi (8,936.89 km) |
| Forest Hill to Oria | 5,897.51 mi (9,491.13 km) |
| Forest Hill to Oristano | 5,543.11 mi (8,920.77 km) |
| Forest Hill to Orta Nova | 5,783.53 mi (9,307.70 km) |
| Forest Hill to Orte | 5,600.51 mi (9,013.14 km) |
| Forest Hill to Ortona | 5,686.91 mi (9,152.20 km) |
| Forest Hill to Orvieto | 5,578.62 mi (8,977.93 km) |
| Forest Hill to Orzinuovi | 5,382.96 mi (8,663.04 km) |
| Forest Hill to Osimo | 5,602.44 mi (9,016.25 km) |
| Forest Hill to Ospitaletto | 5,382.43 mi (8,662.18 km) |
| Forest Hill to Ostuni | 5,885.15 mi (9,471.23 km) |
| Forest Hill to Ottaviano | 5,753.82 mi (9,259.88 km) |
| Forest Hill to Ovada | 5,360.71 mi (8,627.23 km) |
| Forest Hill to Ozieri | 5,534.15 mi (8,906.36 km) |
| Forest Hill to Paceco | 5,793.24 mi (9,323.33 km) |
