| Trowbridge to Noventa Vicentina | 755.00 mi (1,215.05 km) |
| Trowbridge to Novi di Modena | 748.50 mi (1,204.60 km) |
| Trowbridge to Novi Ligure | 679.45 mi (1,093.47 km) |
| Trowbridge to Nuoro | 939.33 mi (1,511.70 km) |
| Trowbridge to Occhiobello | 772.58 mi (1,243.35 km) |
| Trowbridge to Oderzo | 771.66 mi (1,241.87 km) |
| Trowbridge to Oggiono | 651.30 mi (1,048.17 km) |
| Trowbridge to Olbia | 909.32 mi (1,463.40 km) |
| Trowbridge to Oleggio | 633.67 mi (1,019.79 km) |
| Trowbridge to Olgiate Comasco | 637.26 mi (1,025.57 km) |
| Trowbridge to Olgiate Olona | 641.09 mi (1,031.73 km) |
| Trowbridge to Omegna | 612.69 mi (986.03 km) |
| Trowbridge to Opera | 664.64 mi (1,069.64 km) |
| Trowbridge to Oppeano | 741.00 mi (1,192.52 km) |
| Trowbridge to Orbassano | 625.05 mi (1,005.93 km) |
