| Balchik to Sestao | 1,556.24 mi (2,504.52 km) |
| Balchik to Sevilla | 1,835.07 mi (2,953.26 km) |
| Balchik to Sevilla La Nueva | 1,658.94 mi (2,669.80 km) |
| Balchik to Silla | 1,499.65 mi (2,413.46 km) |
| Balchik to Silleda | 1,823.17 mi (2,934.10 km) |
| Balchik to Sitges | 1,349.12 mi (2,171.20 km) |
| Balchik to Socuellamos | 1,620.90 mi (2,608.58 km) |
| Balchik to Soller | 1,334.23 mi (2,147.23 km) |
| Balchik to Solsona | 1,350.52 mi (2,173.46 km) |
| Balchik to Son Servera | 1,304.51 mi (2,099.40 km) |
| Balchik to Sonseca | 1,669.36 mi (2,686.57 km) |
| Balchik to Sopelana | 1,554.00 mi (2,500.93 km) |
| Balchik to Soria | 1,553.25 mi (2,499.72 km) |
| Balchik to Suances | 1,606.06 mi (2,584.70 km) |
| Balchik to Sueca | 1,498.49 mi (2,411.59 km) |
