| San Marcos to Octeville | 5,491.26 mi (8,837.33 km) |
| San Marcos to Oignies | 5,607.33 mi (9,024.12 km) |
| San Marcos to Oissel | 5,597.11 mi (9,007.69 km) |
| San Marcos to Olivet | 5,692.97 mi (9,161.95 km) |
| San Marcos to Ollioules | 6,056.92 mi (9,747.67 km) |
| San Marcos to Olonne-sur-Mer | 5,623.77 mi (9,050.58 km) |
| San Marcos to Oloron-Sainte-Marie | 5,817.48 mi (9,362.33 km) |
| San Marcos to Onet Village | 5,881.52 mi (9,465.40 km) |
| San Marcos to Onnaing | 5,630.59 mi (9,061.57 km) |
| San Marcos to Orange | 5,971.45 mi (9,610.11 km) |
| San Marcos to Orchies | 5,615.13 mi (9,036.68 km) |
| San Marcos to Orleans | 5,691.46 mi (9,159.51 km) |
| San Marcos to Orly | 5,668.53 mi (9,122.62 km) |
| San Marcos to Ormesson-sur-Marne | 5,671.44 mi (9,127.30 km) |
| San Marcos to Orsay | 5,663.79 mi (9,114.98 km) |
