| Sierra Madre to Octeville | 5,463.60 mi (8,792.82 km) |
| Sierra Madre to Oignies | 5,575.86 mi (8,973.47 km) |
| Sierra Madre to Oissel | 5,568.05 mi (8,960.91 km) |
| Sierra Madre to Olivet | 5,664.96 mi (9,116.87 km) |
| Sierra Madre to Ollioules | 6,030.99 mi (9,705.95 km) |
| Sierra Madre to Olonne-sur-Mer | 5,599.67 mi (9,011.79 km) |
| Sierra Madre to Oloron-Sainte-Marie | 5,796.30 mi (9,328.24 km) |
| Sierra Madre to Onet Village | 5,856.75 mi (9,425.53 km) |
| Sierra Madre to Onnaing | 5,598.83 mi (9,010.44 km) |
| Sierra Madre to Orange | 5,945.28 mi (9,568.01 km) |
| Sierra Madre to Orchies | 5,583.49 mi (8,985.77 km) |
| Sierra Madre to Orleans | 5,663.40 mi (9,114.36 km) |
| Sierra Madre to Orly | 5,639.26 mi (9,075.52 km) |
| Sierra Madre to Ormesson-sur-Marne | 5,642.03 mi (9,079.97 km) |
| Sierra Madre to Orsay | 5,634.70 mi (9,068.17 km) |
