| Constanta to Santander | 1,607.45 mi (2,586.94 km) |
| Constanta to Santany | 1,349.92 mi (2,172.49 km) |
| Constanta to Santiago de Compostela | 1,848.80 mi (2,975.36 km) |
| Constanta to Santiago del Teide | 2,718.23 mi (4,374.56 km) |
| Constanta to Santiponce | 1,857.40 mi (2,989.19 km) |
| Constanta to Santomera | 1,592.03 mi (2,562.12 km) |
| Constanta to Santona | 1,590.80 mi (2,560.15 km) |
| Constanta to Santurce-Antiguo | 1,571.70 mi (2,529.40 km) |
| Constanta to Sarria | 1,795.52 mi (2,889.62 km) |
| Constanta to Sauzal | 2,692.13 mi (4,332.56 km) |
| Constanta to Sedavi | 1,521.73 mi (2,448.99 km) |
| Constanta to Segorbe | 1,516.21 mi (2,440.11 km) |
| Constanta to Segovia | 1,670.41 mi (2,688.26 km) |
| Constanta to Senmanat | 1,347.06 mi (2,167.88 km) |
| Constanta to Sesena | 1,669.09 mi (2,686.14 km) |
