| San Luis Obispo to Octeville | 5,488.78 mi (8,833.34 km) |
| San Luis Obispo to Oignies | 5,593.21 mi (9,001.40 km) |
| San Luis Obispo to Oissel | 5,590.28 mi (8,996.68 km) |
| San Luis Obispo to Olivet | 5,689.17 mi (9,155.84 km) |
| San Luis Obispo to Ollioules | 6,058.85 mi (9,750.78 km) |
| San Luis Obispo to Olonne-sur-Mer | 5,631.67 mi (9,063.29 km) |
| San Luis Obispo to Oloron-Sainte-Marie | 5,833.69 mi (9,388.42 km) |
| San Luis Obispo to Onet Village | 5,887.11 mi (9,474.38 km) |
| San Luis Obispo to Onnaing | 5,615.54 mi (9,037.34 km) |
| San Luis Obispo to Orange | 5,972.79 mi (9,612.27 km) |
| San Luis Obispo to Orchies | 5,600.51 mi (9,013.14 km) |
| San Luis Obispo to Orleans | 5,687.52 mi (9,153.18 km) |
| San Luis Obispo to Orly | 5,660.99 mi (9,110.48 km) |
| San Luis Obispo to Ormesson-sur-Marne | 5,663.47 mi (9,114.47 km) |
| San Luis Obispo to Orsay | 5,656.80 mi (9,103.73 km) |
