| Trencin to Noventa Vicentina | 394.43 mi (634.78 km) |
| Trencin to Novi di Modena | 435.38 mi (700.68 km) |
| Trencin to Novi Ligure | 521.75 mi (839.67 km) |
| Trencin to Nuoro | 729.95 mi (1,174.75 km) |
| Trencin to Occhiobello | 409.75 mi (659.42 km) |
| Trencin to Oderzo | 336.88 mi (542.16 km) |
| Trencin to Oggiono | 459.58 mi (739.62 km) |
| Trencin to Olbia | 690.57 mi (1,111.36 km) |
| Trencin to Oleggio | 495.77 mi (797.87 km) |
| Trencin to Olgiate Comasco | 475.48 mi (765.22 km) |
| Trencin to Olgiate Olona | 484.22 mi (779.27 km) |
| Trencin to Omegna | 495.81 mi (797.94 km) |
| Trencin to Opera | 479.78 mi (772.13 km) |
| Trencin to Oppeano | 406.56 mi (654.29 km) |
| Trencin to Orbassano | 562.59 mi (905.41 km) |
