| Unicov to Oignies | 626.79 mi (1,008.72 km) |
| Unicov to Oissel | 717.72 mi (1,155.07 km) |
| Unicov to Olivet | 703.61 mi (1,132.35 km) |
| Unicov to Ollioules | 704.33 mi (1,133.50 km) |
| Unicov to Olonne-sur-Mer | 896.49 mi (1,442.76 km) |
| Unicov to Oloron-Sainte-Marie | 954.72 mi (1,536.48 km) |
| Unicov to Onet Village | 777.20 mi (1,250.78 km) |
| Unicov to Onnaing | 600.29 mi (966.08 km) |
| Unicov to Orange | 697.64 mi (1,122.75 km) |
| Unicov to Orchies | 615.76 mi (990.98 km) |
| Unicov to Orleans | 702.49 mi (1,130.54 km) |
| Unicov to Orly | 666.87 mi (1,073.23 km) |
| Unicov to Ormesson-sur-Marne | 659.80 mi (1,061.85 km) |
| Unicov to Orsay | 676.68 mi (1,089.01 km) |
| Unicov to Orthez | 950.21 mi (1,529.21 km) |
