| Unicov to Sestao | 1,051.20 mi (1,691.74 km) |
| Unicov to Sevilla | 1,436.16 mi (2,311.27 km) |
| Unicov to Sevilla La Nueva | 1,213.97 mi (1,953.70 km) |
| Unicov to Silla | 1,118.53 mi (1,800.11 km) |
| Unicov to Silleda | 1,298.65 mi (2,089.98 km) |
| Unicov to Sitges | 944.60 mi (1,520.19 km) |
| Unicov to Socuellamos | 1,212.86 mi (1,951.90 km) |
| Unicov to Soller | 985.84 mi (1,586.56 km) |
| Unicov to Solsona | 920.07 mi (1,480.71 km) |
| Unicov to Son Servera | 971.01 mi (1,562.69 km) |
| Unicov to Sonseca | 1,239.72 mi (1,995.14 km) |
| Unicov to Sopelana | 1,047.49 mi (1,685.76 km) |
| Unicov to Soria | 1,089.32 mi (1,753.10 km) |
| Unicov to Suances | 1,091.45 mi (1,756.53 km) |
| Unicov to Sueca | 1,122.77 mi (1,806.92 km) |
