| Idaho Falls to Spello | 5,553.94 mi (8,938.20 km) |
| Idaho Falls to Spilamberto | 5,418.99 mi (8,721.03 km) |
| Idaho Falls to Spilimbergo | 5,387.84 mi (8,670.88 km) |
| Idaho Falls to Spinea | 5,401.27 mi (8,692.51 km) |
| Idaho Falls to Spoleto | 5,567.13 mi (8,959.43 km) |
| Idaho Falls to Spoltore | 5,628.08 mi (9,057.52 km) |
| Idaho Falls to Spresiano | 5,388.08 mi (8,671.28 km) |
| Idaho Falls to Squinzano | 5,858.75 mi (9,428.75 km) |
| Idaho Falls to Statte | 5,826.07 mi (9,376.15 km) |
| Idaho Falls to Stezzano | 5,317.13 mi (8,557.10 km) |
| Idaho Falls to Strada | 5,479.78 mi (8,818.85 km) |
| Idaho Falls to Stradella | 5,336.57 mi (8,588.38 km) |
| Idaho Falls to Striano | 5,732.51 mi (9,225.58 km) |
| Idaho Falls to Subiaco | 5,625.29 mi (9,053.02 km) |
| Idaho Falls to Sulmona | 5,644.25 mi (9,083.54 km) |
