| Prelouc to Oignies | 555.29 mi (893.65 km) |
| Prelouc to Oissel | 647.50 mi (1,042.05 km) |
| Prelouc to Olivet | 636.77 mi (1,024.78 km) |
| Prelouc to Ollioules | 662.31 mi (1,065.88 km) |
| Prelouc to Olonne-sur-Mer | 830.64 mi (1,336.79 km) |
| Prelouc to Oloron-Sainte-Marie | 898.49 mi (1,445.99 km) |
| Prelouc to Onet Village | 722.50 mi (1,162.74 km) |
| Prelouc to Onnaing | 528.88 mi (851.15 km) |
| Prelouc to Orange | 648.56 mi (1,043.76 km) |
| Prelouc to Orchies | 544.26 mi (875.90 km) |
| Prelouc to Orleans | 635.55 mi (1,022.82 km) |
| Prelouc to Orly | 598.09 mi (962.54 km) |
| Prelouc to Ormesson-sur-Marne | 590.97 mi (951.08 km) |
| Prelouc to Orsay | 607.93 mi (978.37 km) |
| Prelouc to Orthez | 892.95 mi (1,437.06 km) |
