| San Luis Obispo to Oberkirch | 5,844.80 mi (9,406.29 km) |
| San Luis Obispo to Obernburg am Main | 5,805.41 mi (9,342.90 km) |
| San Luis Obispo to Obernkirchen | 5,674.83 mi (9,132.75 km) |
| San Luis Obispo to Oberschleissheim | 5,959.64 mi (9,591.12 km) |
| San Luis Obispo to Oberstdorf | 5,969.02 mi (9,606.21 km) |
| San Luis Obispo to Obertraubling | 5,936.73 mi (9,554.24 km) |
| San Luis Obispo to Obertshausen | 5,784.61 mi (9,309.43 km) |
| San Luis Obispo to Oberursel | 5,770.11 mi (9,286.09 km) |
| San Luis Obispo to Ochsenfurt | 5,841.51 mi (9,401.00 km) |
| San Luis Obispo to Ochsenhausen | 5,923.56 mi (9,533.06 km) |
| San Luis Obispo to Ochtrup | 5,625.63 mi (9,053.58 km) |
| San Luis Obispo to Odenthal | 5,685.02 mi (9,149.15 km) |
| San Luis Obispo to Oelde | 5,671.65 mi (9,127.63 km) |
| San Luis Obispo to Oelsnitz | 5,856.58 mi (9,425.25 km) |
| San Luis Obispo to Oer-Erkenschwick | 5,656.85 mi (9,103.82 km) |
