| Ercis to Octeville | 2,302.65 mi (3,705.75 km) |
| Ercis to Oignies | 2,101.12 mi (3,381.43 km) |
| Ercis to Oissel | 2,179.31 mi (3,507.26 km) |
| Ercis to Olivet | 2,138.91 mi (3,442.25 km) |
| Ercis to Ollioules | 1,957.49 mi (3,150.27 km) |
| Ercis to Olonne-sur-Mer | 2,313.46 mi (3,723.16 km) |
| Ercis to Oloron-Sainte-Marie | 2,280.24 mi (3,669.69 km) |
| Ercis to Onet Village | 2,112.75 mi (3,400.15 km) |
| Ercis to Onnaing | 2,074.05 mi (3,337.85 km) |
| Ercis to Orange | 2,004.40 mi (3,225.77 km) |
| Ercis to Orchies | 2,090.21 mi (3,363.87 km) |
| Ercis to Orleans | 2,138.57 mi (3,441.70 km) |
| Ercis to Orly | 2,118.38 mi (3,409.20 km) |
| Ercis to Ormesson-sur-Marne | 2,111.91 mi (3,398.80 km) |
| Ercis to Orsay | 2,127.57 mi (3,424.00 km) |
