| Darby to Octeville | 3,525.32 mi (5,673.46 km) |
| Darby to Oignies | 3,698.95 mi (5,952.88 km) |
| Darby to Oissel | 3,647.50 mi (5,870.08 km) |
| Darby to Olivet | 3,719.18 mi (5,985.44 km) |
| Darby to Ollioules | 4,028.92 mi (6,483.93 km) |
| Darby to Olonne-sur-Mer | 3,592.58 mi (5,781.70 km) |
| Darby to Oloron-Sainte-Marie | 3,733.83 mi (6,009.02 km) |
| Darby to Onet Village | 3,845.88 mi (6,189.34 km) |
| Darby to Onnaing | 3,725.79 mi (5,996.08 km) |
| Darby to Orange | 3,951.69 mi (6,359.63 km) |
| Darby to Orchies | 3,709.09 mi (5,969.21 km) |
| Darby to Orleans | 3,718.53 mi (5,984.40 km) |
| Darby to Orly | 3,717.40 mi (5,982.58 km) |
| Darby to Ormesson-sur-Marne | 3,722.47 mi (5,990.74 km) |
| Darby to Orsay | 3,709.88 mi (5,970.48 km) |
