| Ustron to Sestao | 1,122.70 mi (1,806.82 km) |
| Ustron to Sevilla | 1,501.82 mi (2,416.95 km) |
| Ustron to Sevilla La Nueva | 1,282.06 mi (2,063.28 km) |
| Ustron to Silla | 1,180.91 mi (1,900.49 km) |
| Ustron to Silleda | 1,371.95 mi (2,207.93 km) |
| Ustron to Sitges | 1,007.51 mi (1,621.42 km) |
| Ustron to Socuellamos | 1,278.12 mi (2,056.93 km) |
| Ustron to Soller | 1,043.94 mi (1,680.06 km) |
| Ustron to Solsona | 985.05 mi (1,585.29 km) |
| Ustron to Son Servera | 1,027.48 mi (1,653.57 km) |
| Ustron to Sonseca | 1,306.80 mi (2,103.10 km) |
| Ustron to Sopelana | 1,119.07 mi (1,800.97 km) |
| Ustron to Soria | 1,158.18 mi (1,863.92 km) |
| Ustron to Suances | 1,163.69 mi (1,872.78 km) |
| Ustron to Sueca | 1,184.71 mi (1,906.60 km) |
