| Halluin to Novi di Modena | 543.15 mi (874.12 km) |
| Halluin to Novi Ligure | 491.95 mi (791.72 km) |
| Halluin to Nuoro | 782.40 mi (1,259.14 km) |
| Halluin to Occhiobello | 562.99 mi (906.05 km) |
| Halluin to Oderzo | 551.53 mi (887.60 km) |
| Halluin to Oggiono | 448.30 mi (721.46 km) |
| Halluin to Olbia | 746.89 mi (1,202.01 km) |
| Halluin to Oleggio | 438.63 mi (705.90 km) |
| Halluin to Olgiate Comasco | 437.30 mi (703.77 km) |
| Halluin to Olgiate Olona | 443.46 mi (713.68 km) |
| Halluin to Omegna | 416.58 mi (670.42 km) |
| Halluin to Opera | 466.85 mi (751.32 km) |
| Halluin to Oppeano | 530.54 mi (853.83 km) |
| Halluin to Orbassano | 448.18 mi (721.28 km) |
| Halluin to Orbetello | 691.70 mi (1,113.18 km) |
