| West Rancho Dominguez to Orbetello | 6,269.91 mi (10,090.45 km) |
| West Rancho Dominguez to Oria | 6,578.92 mi (10,587.75 km) |
| West Rancho Dominguez to Oristano | 6,313.60 mi (10,160.75 km) |
| West Rancho Dominguez to Orta Nova | 6,473.42 mi (10,417.96 km) |
| West Rancho Dominguez to Orte | 6,306.80 mi (10,149.82 km) |
| West Rancho Dominguez to Ortona | 6,376.52 mi (10,262.01 km) |
| West Rancho Dominguez to Orvieto | 6,284.12 mi (10,113.32 km) |
| West Rancho Dominguez to Orzinuovi | 6,072.71 mi (9,773.08 km) |
| West Rancho Dominguez to Osimo | 6,286.25 mi (10,116.74 km) |
| West Rancho Dominguez to Ospitaletto | 6,069.00 mi (9,767.10 km) |
| West Rancho Dominguez to Ostuni | 6,564.27 mi (10,564.17 km) |
| West Rancho Dominguez to Ottaviano | 6,461.03 mi (10,398.03 km) |
| West Rancho Dominguez to Ovada | 6,070.89 mi (9,770.16 km) |
| West Rancho Dominguez to Ozieri | 6,292.83 mi (10,127.33 km) |
| West Rancho Dominguez to Paceco | 6,552.51 mi (10,545.24 km) |
