| Encinitas to Orbetello | 6,285.07 mi (10,114.84 km) |
| Encinitas to Oria | 6,597.74 mi (10,618.04 km) |
| Encinitas to Oristano | 6,324.25 mi (10,177.89 km) |
| Encinitas to Orta Nova | 6,491.29 mi (10,446.72 km) |
| Encinitas to Orte | 6,322.93 mi (10,175.77 km) |
| Encinitas to Ortona | 6,394.18 mi (10,290.44 km) |
| Encinitas to Orvieto | 6,300.26 mi (10,139.28 km) |
| Encinitas to Orzinuovi | 6,089.63 mi (9,800.31 km) |
| Encinitas to Osimo | 6,304.17 mi (10,145.57 km) |
| Encinitas to Ospitaletto | 6,086.17 mi (9,794.74 km) |
| Encinitas to Ostuni | 6,583.24 mi (10,594.70 km) |
| Encinitas to Ottaviano | 6,477.44 mi (10,424.44 km) |
| Encinitas to Ovada | 6,086.13 mi (9,794.68 km) |
| Encinitas to Ozieri | 6,304.47 mi (10,146.06 km) |
| Encinitas to Paceco | 6,564.69 mi (10,564.84 km) |
