| Rancho San Diego to Oerlinghausen | 5,723.29 mi (9,210.74 km) |
| Rancho San Diego to Oestrich-Winkel | 5,801.43 mi (9,336.50 km) |
| Rancho San Diego to Offenburg | 5,875.72 mi (9,456.06 km) |
| Rancho San Diego to Oftersheim | 5,850.93 mi (9,416.17 km) |
| Rancho San Diego to Ohrdruf | 5,841.51 mi (9,401.01 km) |
| Rancho San Diego to Ohringen | 5,887.73 mi (9,475.38 km) |
| Rancho San Diego to Olbernhau | 5,924.54 mi (9,534.62 km) |
| Rancho San Diego to Olching | 5,994.53 mi (9,647.26 km) |
| Rancho San Diego to Oldenburg | 5,651.41 mi (9,095.07 km) |
| Rancho San Diego to Oldenburg in Holstein | 5,667.61 mi (9,121.14 km) |
| Rancho San Diego to Olfen | 5,697.63 mi (9,169.45 km) |
| Rancho San Diego to Olpe | 5,745.81 mi (9,246.98 km) |
| Rancho San Diego to Olsberg | 5,748.72 mi (9,251.67 km) |
| Rancho San Diego to Oranienburg | 5,811.62 mi (9,352.90 km) |
| Rancho San Diego to Ortenberg | 5,815.77 mi (9,359.57 km) |
