| Encinitas to Oerlinghausen | 5,716.15 mi (9,199.26 km) |
| Encinitas to Oestrich-Winkel | 5,795.09 mi (9,326.29 km) |
| Encinitas to Offenburg | 5,869.90 mi (9,446.69 km) |
| Encinitas to Oftersheim | 5,844.67 mi (9,406.08 km) |
| Encinitas to Ohrdruf | 5,834.29 mi (9,389.38 km) |
| Encinitas to Ohringen | 5,881.31 mi (9,465.05 km) |
| Encinitas to Olbernhau | 5,916.77 mi (9,522.13 km) |
| Encinitas to Olching | 5,988.00 mi (9,636.75 km) |
| Encinitas to Oldenburg | 5,643.98 mi (9,083.11 km) |
| Encinitas to Oldenburg in Holstein | 5,659.26 mi (9,107.70 km) |
| Encinitas to Olfen | 5,690.85 mi (9,158.54 km) |
| Encinitas to Olpe | 5,739.16 mi (9,236.29 km) |
| Encinitas to Olsberg | 5,741.82 mi (9,240.57 km) |
| Encinitas to Oranienburg | 5,803.25 mi (9,339.43 km) |
| Encinitas to Ortenberg | 5,809.07 mi (9,348.80 km) |
