| Boise to Senftenberg | 5,223.50 mi (8,406.41 km) |
| Boise to Siegburg | 5,085.63 mi (8,184.53 km) |
| Boise to Siegen | 5,103.42 mi (8,213.17 km) |
| Boise to Sigmaringen | 5,288.92 mi (8,511.69 km) |
| Boise to Simbach am Inn | 5,382.22 mi (8,661.85 km) |
| Boise to Simmerath | 5,071.31 mi (8,161.49 km) |
| Boise to Sindelfingen | 5,248.59 mi (8,446.79 km) |
| Boise to Sinsheim | 5,215.92 mi (8,394.21 km) |
| Boise to Sinzheim | 5,222.58 mi (8,404.93 km) |
| Boise to Sinzig | 5,100.69 mi (8,208.77 km) |
| Boise to Soest | 5,068.77 mi (8,157.40 km) |
| Boise to Solingen | 5,062.72 mi (8,147.67 km) |
| Boise to Soltau | 5,037.15 mi (8,106.51 km) |
| Boise to Sommerda | 5,170.36 mi (8,320.89 km) |
| Boise to Sondershausen | 5,152.54 mi (8,292.21 km) |
