| Tulcea to Santander | 1,605.01 mi (2,583.02 km) |
| Tulcea to Santany | 1,366.35 mi (2,198.92 km) |
| Tulcea to Santiago de Compostela | 1,845.29 mi (2,969.70 km) |
| Tulcea to Santiago del Teide | 2,737.07 mi (4,404.88 km) |
| Tulcea to Santiponce | 1,869.69 mi (3,008.98 km) |
| Tulcea to Santomera | 1,607.75 mi (2,587.43 km) |
| Tulcea to Santona | 1,588.63 mi (2,556.65 km) |
| Tulcea to Santurce-Antiguo | 1,570.11 mi (2,526.85 km) |
| Tulcea to Sarria | 1,792.93 mi (2,885.44 km) |
| Tulcea to Sauzal | 2,711.07 mi (4,363.05 km) |
| Tulcea to Sedavi | 1,534.22 mi (2,469.09 km) |
| Tulcea to Segorbe | 1,527.32 mi (2,457.98 km) |
| Tulcea to Segovia | 1,675.18 mi (2,695.94 km) |
| Tulcea to Senmanat | 1,354.82 mi (2,180.37 km) |
| Tulcea to Sesena | 1,676.58 mi (2,698.20 km) |
