| Sioux City to Sacile | 4,929.98 mi (7,934.04 km) |
| Sioux City to Sala Consilina | 5,309.51 mi (8,544.83 km) |
| Sioux City to Salemi | 5,329.18 mi (8,576.48 km) |
| Sioux City to Salerno | 5,264.65 mi (8,472.64 km) |
| Sioux City to Salo | 4,876.63 mi (7,848.18 km) |
| Sioux City to Salsomaggiore Terme | 4,892.43 mi (7,873.61 km) |
| Sioux City to Saluzzo | 4,807.67 mi (7,737.19 km) |
| Sioux City to Salzano | 4,936.60 mi (7,944.70 km) |
| Sioux City to Samarate | 4,812.14 mi (7,744.39 km) |
| Sioux City to San Benedetto del Tronto | 5,122.60 mi (8,244.02 km) |
| Sioux City to San Biagio di Callalta | 4,938.87 mi (7,948.34 km) |
| Sioux City to San Bonifacio | 4,912.91 mi (7,906.57 km) |
| Sioux City to San Casciano in Val di Pesa | 4,990.32 mi (8,031.15 km) |
| Sioux City to San Cataldo | 5,391.38 mi (8,676.58 km) |
| Sioux City to San Cesareo | 5,136.98 mi (8,267.17 km) |
