| Granite City to Octeville | 4,191.09 mi (6,744.91 km) |
| Granite City to Oignies | 4,346.07 mi (6,994.33 km) |
| Granite City to Oissel | 4,309.10 mi (6,934.83 km) |
| Granite City to Olivet | 4,390.80 mi (7,066.31 km) |
| Granite City to Ollioules | 4,724.13 mi (7,602.75 km) |
| Granite City to Olonne-sur-Mer | 4,283.60 mi (6,893.79 km) |
| Granite City to Oloron-Sainte-Marie | 4,445.59 mi (7,154.48 km) |
| Granite City to Onet Village | 4,541.65 mi (7,309.08 km) |
| Granite City to Onnaing | 4,372.05 mi (7,036.13 km) |
| Granite City to Orange | 4,643.06 mi (7,472.28 km) |
| Granite City to Orchies | 4,355.53 mi (7,009.54 km) |
| Granite City to Orleans | 4,389.83 mi (7,064.75 km) |
| Granite City to Orly | 4,380.66 mi (7,049.99 km) |
| Granite City to Ormesson-sur-Marne | 4,385.01 mi (7,056.99 km) |
| Granite City to Orsay | 4,374.05 mi (7,039.35 km) |
