| Castleford to Noventa Vicentina | 818.59 mi (1,317.39 km) |
| Castleford to Novi di Modena | 820.24 mi (1,320.05 km) |
| Castleford to Novi Ligure | 768.01 mi (1,235.99 km) |
| Castleford to Nuoro | 1,051.24 mi (1,691.81 km) |
| Castleford to Occhiobello | 839.36 mi (1,350.81 km) |
| Castleford to Oderzo | 823.77 mi (1,325.74 km) |
| Castleford to Oggiono | 725.65 mi (1,167.82 km) |
| Castleford to Olbia | 1,017.52 mi (1,637.55 km) |
| Castleford to Oleggio | 715.59 mi (1,151.62 km) |
| Castleford to Olgiate Comasco | 714.62 mi (1,150.07 km) |
| Castleford to Olgiate Olona | 720.66 mi (1,159.80 km) |
| Castleford to Omegna | 693.58 mi (1,116.21 km) |
| Castleford to Opera | 744.10 mi (1,197.52 km) |
| Castleford to Oppeano | 806.83 mi (1,298.47 km) |
| Castleford to Orbassano | 721.42 mi (1,161.01 km) |
