| Boadilla del Monte to Octeville | 646.22 mi (1,039.99 km) |
| Boadilla del Monte to Oignies | 770.07 mi (1,239.31 km) |
| Boadilla del Monte to Oissel | 663.14 mi (1,067.22 km) |
| Boadilla del Monte to Olivet | 589.07 mi (948.02 km) |
| Boadilla del Monte to Ollioules | 534.95 mi (860.93 km) |
| Boadilla del Monte to Olonne-sur-Mer | 436.36 mi (702.26 km) |
| Boadilla del Monte to Oloron-Sainte-Marie | 255.74 mi (411.58 km) |
| Boadilla del Monte to Onet Village | 428.47 mi (689.55 km) |
| Boadilla del Monte to Onnaing | 778.18 mi (1,252.36 km) |
| Boadilla del Monte to Orange | 513.03 mi (825.65 km) |
| Boadilla del Monte to Orchies | 775.67 mi (1,248.32 km) |
| Boadilla del Monte to Orleans | 591.56 mi (952.02 km) |
| Boadilla del Monte to Orly | 652.89 mi (1,050.73 km) |
| Boadilla del Monte to Ormesson-sur-Marne | 658.76 mi (1,060.17 km) |
| Boadilla del Monte to Orsay | 645.47 mi (1,038.78 km) |
