| Boston to Santa Ursula | 1,892.62 mi (3,045.87 km) |
| Boston to Santander | 679.60 mi (1,093.72 km) |
| Boston to Santany | 952.79 mi (1,533.37 km) |
| Boston to Santiago de Compostela | 800.18 mi (1,287.76 km) |
| Boston to Santiago del Teide | 1,908.25 mi (3,071.03 km) |
| Boston to Santiponce | 1,111.94 mi (1,789.50 km) |
| Boston to Santomera | 1,031.51 mi (1,660.06 km) |
| Boston to Santona | 677.17 mi (1,089.80 km) |
| Boston to Santurce-Antiguo | 680.45 mi (1,095.07 km) |
| Boston to Sarria | 782.10 mi (1,258.67 km) |
| Boston to Sauzal | 1,887.85 mi (3,038.20 km) |
| Boston to Sedavi | 936.16 mi (1,506.60 km) |
| Boston to Segorbe | 906.92 mi (1,459.54 km) |
| Boston to Segovia | 852.71 mi (1,372.30 km) |
| Boston to Senmanat | 791.66 mi (1,274.05 km) |
