| Southborough to Noventa Vicentina | 657.51 mi (1,058.15 km) |
| Southborough to Novi di Modena | 653.82 mi (1,052.22 km) |
| Southborough to Novi Ligure | 591.67 mi (952.20 km) |
| Southborough to Nuoro | 865.98 mi (1,393.66 km) |
| Southborough to Occhiobello | 676.23 mi (1,088.28 km) |
| Southborough to Oderzo | 670.90 mi (1,079.70 km) |
| Southborough to Oggiono | 557.11 mi (896.58 km) |
| Southborough to Olbia | 833.45 mi (1,341.30 km) |
| Southborough to Oleggio | 542.53 mi (873.11 km) |
| Southborough to Olgiate Comasco | 544.19 mi (875.79 km) |
| Southborough to Olgiate Olona | 548.97 mi (883.48 km) |
| Southborough to Omegna | 520.96 mi (838.41 km) |
| Southborough to Opera | 572.61 mi (921.53 km) |
| Southborough to Oppeano | 644.18 mi (1,036.71 km) |
| Southborough to Orbassano | 541.08 mi (870.79 km) |
