| Parker to Orbetello | 5,502.66 mi (8,855.67 km) |
| Parker to Oria | 5,826.87 mi (9,377.43 km) |
| Parker to Oristano | 5,528.47 mi (8,897.20 km) |
| Parker to Orta Nova | 5,717.40 mi (9,201.26 km) |
| Parker to Orte | 5,543.56 mi (8,921.49 km) |
| Parker to Ortona | 5,619.87 mi (9,044.31 km) |
| Parker to Orvieto | 5,521.00 mi (8,885.19 km) |
| Parker to Orzinuovi | 5,313.73 mi (8,551.63 km) |
| Parker to Osimo | 5,531.07 mi (8,901.40 km) |
| Parker to Ospitaletto | 5,311.16 mi (8,547.48 km) |
| Parker to Ostuni | 5,812.97 mi (9,355.06 km) |
| Parker to Ottaviano | 5,698.57 mi (9,170.96 km) |
| Parker to Ovada | 5,304.55 mi (8,536.85 km) |
| Parker to Ozieri | 5,511.42 mi (8,869.77 km) |
| Parker to Paceco | 5,772.56 mi (9,290.04 km) |
