| Idrija to Southern Pines (North Carolina) | 4,672.65 mi (7,519.90 km) |
| Idrija to Southfield (Michigan) | 4,499.05 mi (7,240.52 km) |
| Idrija to Southgate (Michigan) | 4,509.15 mi (7,256.77 km) |
| Idrija to Southlake (Texas) | 5,498.90 mi (8,849.62 km) |
| Idrija to Spanaway (Washington) | 5,484.90 mi (8,827.09 km) |
| Idrija to Spanish Fork (Utah) | 5,607.55 mi (9,024.48 km) |
| Idrija to Spanish Lake (Missouri) | 4,939.33 mi (7,949.09 km) |
| Idrija to Spanish Springs (Nevada) | 5,863.04 mi (9,435.66 km) |
| Idrija to Sparks (Nevada) | 5,869.26 mi (9,445.66 km) |
| Idrija to Spartanburg (South Carolina) | 4,790.22 mi (7,709.11 km) |
| Idrija to Spearfish (South Dakota) | 5,125.00 mi (8,247.89 km) |
| Idrija to Speedway (Indiana) | 4,738.39 mi (7,625.70 km) |
| Idrija to Spencer (Iowa) | 4,906.14 mi (7,895.67 km) |
| Idrija to Spokane (Washington) | 5,331.90 mi (8,580.86 km) |
| Idrija to Spokane Valley (Washington) | 5,327.23 mi (8,573.34 km) |
