| Morro Bay to Octeville | 5,488.88 mi (8,833.49 km) |
| Morro Bay to Oignies | 5,592.72 mi (9,000.61 km) |
| Morro Bay to Oissel | 5,590.14 mi (8,996.47 km) |
| Morro Bay to Olivet | 5,689.18 mi (9,155.85 km) |
| Morro Bay to Ollioules | 6,059.11 mi (9,751.19 km) |
| Morro Bay to Olonne-sur-Mer | 5,632.26 mi (9,064.24 km) |
| Morro Bay to Oloron-Sainte-Marie | 5,834.67 mi (9,390.00 km) |
| Morro Bay to Onet Village | 5,887.56 mi (9,475.11 km) |
| Morro Bay to Onnaing | 5,615.00 mi (9,036.47 km) |
| Morro Bay to Orange | 5,973.02 mi (9,612.65 km) |
| Morro Bay to Orchies | 5,599.98 mi (9,012.30 km) |
| Morro Bay to Orleans | 5,687.52 mi (9,153.18 km) |
| Morro Bay to Orly | 5,660.81 mi (9,110.19 km) |
| Morro Bay to Ormesson-sur-Marne | 5,663.27 mi (9,114.15 km) |
| Morro Bay to Orsay | 5,656.65 mi (9,103.50 km) |
