| Boston to Spello | 903.18 mi (1,453.53 km) |
| Boston to Spilamberto | 768.28 mi (1,236.43 km) |
| Boston to Spilimbergo | 745.37 mi (1,199.56 km) |
| Boston to Spinea | 752.61 mi (1,211.20 km) |
| Boston to Spoleto | 916.64 mi (1,475.19 km) |
| Boston to Spoltore | 977.12 mi (1,572.53 km) |
| Boston to Spresiano | 740.85 mi (1,192.28 km) |
| Boston to Squinzano | 1,211.57 mi (1,949.83 km) |
| Boston to Statte | 1,176.86 mi (1,893.97 km) |
| Boston to Stezzano | 666.59 mi (1,072.78 km) |
| Boston to Strada | 830.30 mi (1,336.23 km) |
| Boston to Stradella | 688.43 mi (1,107.92 km) |
| Boston to Striano | 1,081.99 mi (1,741.30 km) |
| Boston to Subiaco | 975.46 mi (1,569.85 km) |
| Boston to Sulmona | 993.26 mi (1,598.50 km) |
