| Boston to Sacile | 740.10 mi (1,191.07 km) |
| Boston to Sala Consilina | 1,136.45 mi (1,828.95 km) |
| Boston to Salemi | 1,213.95 mi (1,953.66 km) |
| Boston to Salerno | 1,095.45 mi (1,762.95 km) |
| Boston to Salo | 695.63 mi (1,119.51 km) |
| Boston to Salsomaggiore Terme | 722.62 mi (1,162.94 km) |
| Boston to Saluzzo | 668.49 mi (1,075.83 km) |
| Boston to Salzano | 749.12 mi (1,205.60 km) |
| Boston to Samarate | 643.85 mi (1,036.17 km) |
| Boston to San Benedetto del Tronto | 942.05 mi (1,516.09 km) |
| Boston to San Biagio di Callalta | 750.05 mi (1,207.09 km) |
| Boston to San Bonifacio | 729.44 mi (1,173.92 km) |
| Boston to San Casciano in Val di Pesa | 822.39 mi (1,323.51 km) |
| Boston to San Cataldo | 1,263.84 mi (2,033.96 km) |
| Boston to San Cesareo | 973.60 mi (1,566.86 km) |
