| Les Clayes-sous-Bois to Novi di Modena | 500.64 mi (805.71 km) |
| Les Clayes-sous-Bois to Novi Ligure | 426.65 mi (686.63 km) |
| Les Clayes-sous-Bois to Nuoro | 689.26 mi (1,109.26 km) |
| Les Clayes-sous-Bois to Occhiobello | 526.77 mi (847.76 km) |
| Les Clayes-sous-Bois to Oderzo | 534.75 mi (860.60 km) |
| Les Clayes-sous-Bois to Oggiono | 403.67 mi (649.65 km) |
| Les Clayes-sous-Bois to Olbia | 657.84 mi (1,058.69 km) |
| Les Clayes-sous-Bois to Oleggio | 383.08 mi (616.51 km) |
| Les Clayes-sous-Bois to Olgiate Comasco | 388.47 mi (625.18 km) |
| Les Clayes-sous-Bois to Olgiate Olona | 391.30 mi (629.74 km) |
| Les Clayes-sous-Bois to Omegna | 362.78 mi (583.83 km) |
| Les Clayes-sous-Bois to Opera | 414.60 mi (667.23 km) |
| Les Clayes-sous-Bois to Oppeano | 496.18 mi (798.52 km) |
| Les Clayes-sous-Bois to Orbassano | 371.45 mi (597.79 km) |
| Les Clayes-sous-Bois to Orbetello | 626.22 mi (1,007.81 km) |
