| Ridgecrest to Orbetello | 6,152.47 mi (9,901.45 km) |
| Ridgecrest to Oria | 6,459.76 mi (10,395.98 km) |
| Ridgecrest to Oristano | 6,198.53 mi (9,975.57 km) |
| Ridgecrest to Orta Nova | 6,354.68 mi (10,226.88 km) |
| Ridgecrest to Orte | 6,188.90 mi (9,960.07 km) |
| Ridgecrest to Ortona | 6,257.89 mi (10,071.10 km) |
| Ridgecrest to Orvieto | 6,166.21 mi (9,923.56 km) |
| Ridgecrest to Orzinuovi | 5,954.46 mi (9,582.78 km) |
| Ridgecrest to Osimo | 6,167.52 mi (9,925.66 km) |
| Ridgecrest to Ospitaletto | 5,950.63 mi (9,576.62 km) |
| Ridgecrest to Ostuni | 6,445.05 mi (10,372.30 km) |
| Ridgecrest to Ottaviano | 6,342.97 mi (10,208.02 km) |
| Ridgecrest to Ovada | 5,953.45 mi (9,581.15 km) |
| Ridgecrest to Ozieri | 6,177.21 mi (9,941.26 km) |
| Ridgecrest to Paceco | 6,436.55 mi (10,358.63 km) |
