| San Luis Obispo to Oerlinghausen | 5,678.66 mi (9,138.92 km) |
| San Luis Obispo to Oestrich-Winkel | 5,764.58 mi (9,277.19 km) |
| San Luis Obispo to Offenburg | 5,843.93 mi (9,404.90 km) |
| San Luis Obispo to Oftersheim | 5,814.73 mi (9,357.91 km) |
| San Luis Obispo to Ohrdruf | 5,795.77 mi (9,327.39 km) |
| San Luis Obispo to Ohringen | 5,849.91 mi (9,414.52 km) |
| San Luis Obispo to Olbernhau | 5,873.20 mi (9,452.00 km) |
| San Luis Obispo to Olching | 5,955.40 mi (9,584.30 km) |
| San Luis Obispo to Oldenburg | 5,604.00 mi (9,018.77 km) |
| San Luis Obispo to Oldenburg in Holstein | 5,610.89 mi (9,029.85 km) |
| San Luis Obispo to Olfen | 5,656.63 mi (9,103.46 km) |
| San Luis Obispo to Olpe | 5,706.07 mi (9,183.03 km) |
| San Luis Obispo to Olsberg | 5,706.46 mi (9,183.65 km) |
| San Luis Obispo to Oranienburg | 5,754.39 mi (9,260.79 km) |
| San Luis Obispo to Ortenberg | 5,775.36 mi (9,294.54 km) |
