| Boston to Sabadell | 795.63 mi (1,280.45 km) |
| Boston to Sabinanigo | 722.57 mi (1,162.87 km) |
| Boston to Sagunto | 918.85 mi (1,478.75 km) |
| Boston to Salamanca | 870.67 mi (1,401.21 km) |
| Boston to Salobrena | 1,134.35 mi (1,825.57 km) |
| Boston to Salou | 823.59 mi (1,325.43 km) |
| Boston to Salt | 770.97 mi (1,240.75 km) |
| Boston to Salvatierra de Mino | 848.74 mi (1,365.92 km) |
| Boston to Sama | 717.03 mi (1,153.94 km) |
| Boston to San Adrian de Besos | 804.37 mi (1,294.51 km) |
| Boston to San Agustin de Guadalix | 866.10 mi (1,393.85 km) |
| Boston to San Andres de la Barca | 801.80 mi (1,290.38 km) |
| Boston to San Andres de Llevaneras | 796.28 mi (1,281.49 km) |
| Boston to San Andres del Rabanedo | 760.45 mi (1,223.82 km) |
| Boston to San Bartolome | 1,904.69 mi (3,065.30 km) |
