| Houghton le Spring to Noventa Vicentina | 873.91 mi (1,406.43 km) |
| Houghton le Spring to Novi di Modena | 878.16 mi (1,413.26 km) |
| Houghton le Spring to Novi Ligure | 831.38 mi (1,337.98 km) |
| Houghton le Spring to Nuoro | 1,119.76 mi (1,802.07 km) |
| Houghton le Spring to Occhiobello | 895.54 mi (1,441.23 km) |
| Houghton le Spring to Oderzo | 875.21 mi (1,408.52 km) |
| Houghton le Spring to Oggiono | 785.21 mi (1,263.67 km) |
| Houghton le Spring to Olbia | 1,085.14 mi (1,746.37 km) |
| Houghton le Spring to Oleggio | 777.48 mi (1,251.23 km) |
| Houghton le Spring to Olgiate Comasco | 775.19 mi (1,247.55 km) |
| Houghton le Spring to Olgiate Olona | 781.83 mi (1,258.24 km) |
| Houghton le Spring to Omegna | 755.39 mi (1,215.68 km) |
| Houghton le Spring to Opera | 805.02 mi (1,295.56 km) |
| Houghton le Spring to Oppeano | 862.99 mi (1,388.84 km) |
| Houghton le Spring to Orbassano | 787.29 mi (1,267.03 km) |
