| Boston to Noventa Vicentina | 743.43 mi (1,196.44 km) |
| Boston to Novi di Modena | 745.02 mi (1,198.99 km) |
| Boston to Novi Ligure | 693.43 mi (1,115.97 km) |
| Boston to Nuoro | 978.76 mi (1,575.16 km) |
| Boston to Occhiobello | 764.15 mi (1,229.79 km) |
| Boston to Oderzo | 749.05 mi (1,205.49 km) |
| Boston to Oggiono | 650.49 mi (1,046.86 km) |
| Boston to Olbia | 944.55 mi (1,520.10 km) |
| Boston to Oleggio | 640.70 mi (1,031.10 km) |
| Boston to Olgiate Comasco | 639.55 mi (1,029.26 km) |
| Boston to Olgiate Olona | 645.67 mi (1,039.10 km) |
| Boston to Omegna | 618.67 mi (995.66 km) |
| Boston to Opera | 669.08 mi (1,076.78 km) |
| Boston to Oppeano | 731.64 mi (1,177.45 km) |
| Boston to Orbassano | 647.60 mi (1,042.20 km) |
