| State College to Orbetello | 4,370.90 mi (7,034.28 km) |
| State College to Oria | 4,721.38 mi (7,598.32 km) |
| State College to Oristano | 4,348.00 mi (6,997.43 km) |
| State College to Orta Nova | 4,606.30 mi (7,413.12 km) |
| State College to Orte | 4,420.69 mi (7,114.41 km) |
| State College to Ortona | 4,510.92 mi (7,259.62 km) |
| State College to Orvieto | 4,399.28 mi (7,079.96 km) |
| State College to Orzinuovi | 4,210.81 mi (6,776.65 km) |
| State College to Osimo | 4,429.25 mi (7,128.19 km) |
| State College to Ospitaletto | 4,211.31 mi (6,777.44 km) |
| State College to Ostuni | 4,709.83 mi (7,579.73 km) |
| State College to Ottaviano | 4,572.07 mi (7,358.03 km) |
| State College to Ovada | 4,182.56 mi (6,731.17 km) |
| State College to Ozieri | 4,341.65 mi (6,987.22 km) |
| State College to Paceco | 4,598.69 mi (7,400.87 km) |
