| Herouville-Saint-Clair to Novi di Modena | 605.79 mi (974.93 km) |
| Herouville-Saint-Clair to Novi Ligure | 527.40 mi (848.77 km) |
| Herouville-Saint-Clair to Nuoro | 774.33 mi (1,246.16 km) |
| Herouville-Saint-Clair to Occhiobello | 632.73 mi (1,018.27 km) |
| Herouville-Saint-Clair to Oderzo | 642.46 mi (1,033.94 km) |
| Herouville-Saint-Clair to Oggiono | 509.26 mi (819.58 km) |
| Herouville-Saint-Clair to Olbia | 745.62 mi (1,199.96 km) |
| Herouville-Saint-Clair to Oleggio | 486.92 mi (783.61 km) |
| Herouville-Saint-Clair to Olgiate Comasco | 493.53 mi (794.25 km) |
| Herouville-Saint-Clair to Olgiate Olona | 495.71 mi (797.77 km) |
| Herouville-Saint-Clair to Omegna | 467.24 mi (751.95 km) |
| Herouville-Saint-Clair to Opera | 518.71 mi (834.79 km) |
| Herouville-Saint-Clair to Oppeano | 602.54 mi (969.69 km) |
| Herouville-Saint-Clair to Orbassano | 469.49 mi (755.56 km) |
| Herouville-Saint-Clair to Orbetello | 724.62 mi (1,166.17 km) |
