| Cadiz to Octeville | 934.09 mi (1,503.27 km) |
| Cadiz to Oignies | 1,067.49 mi (1,717.96 km) |
| Cadiz to Oissel | 959.42 mi (1,544.04 km) |
| Cadiz to Olivet | 886.93 mi (1,427.38 km) |
| Cadiz to Ollioules | 788.23 mi (1,268.54 km) |
| Cadiz to Olonne-sur-Mer | 729.23 mi (1,173.58 km) |
| Cadiz to Oloron-Sainte-Marie | 549.94 mi (885.04 km) |
| Cadiz to Onet Village | 714.14 mi (1,149.29 km) |
| Cadiz to Onnaing | 1,075.94 mi (1,731.56 km) |
| Cadiz to Orange | 784.95 mi (1,263.25 km) |
| Cadiz to Orchies | 1,073.24 mi (1,727.22 km) |
| Cadiz to Orleans | 889.42 mi (1,431.38 km) |
| Cadiz to Orly | 950.73 mi (1,530.05 km) |
| Cadiz to Ormesson-sur-Marne | 956.62 mi (1,539.52 km) |
| Cadiz to Orsay | 943.26 mi (1,518.04 km) |
