| Trieste to Sestao | 841.01 mi (1,353.47 km) |
| Trieste to Sevilla | 1,172.26 mi (1,886.57 km) |
| Trieste to Sevilla La Nueva | 968.55 mi (1,558.72 km) |
| Trieste to Silla | 841.10 mi (1,353.61 km) |
| Trieste to Silleda | 1,105.60 mi (1,779.28 km) |
| Trieste to Sitges | 672.45 mi (1,082.21 km) |
| Trieste to Socuellamos | 949.07 mi (1,527.38 km) |
| Trieste to Soller | 692.61 mi (1,114.65 km) |
| Trieste to Solsona | 660.08 mi (1,062.30 km) |
| Trieste to Son Servera | 672.53 mi (1,082.33 km) |
| Trieste to Sonseca | 986.78 mi (1,588.07 km) |
| Trieste to Sopelana | 838.33 mi (1,349.17 km) |
| Trieste to Soria | 852.41 mi (1,371.82 km) |
| Trieste to Suances | 888.91 mi (1,430.55 km) |
| Trieste to Sueca | 843.29 mi (1,357.14 km) |
