| Helensburgh to Sabadell | 1,045.81 mi (1,683.07 km) |
| Helensburgh to Sabinanigo | 952.71 mi (1,533.24 km) |
| Helensburgh to Sagunto | 1,147.19 mi (1,846.22 km) |
| Helensburgh to Salamanca | 1,040.81 mi (1,675.03 km) |
| Helensburgh to Salobrena | 1,332.50 mi (2,144.45 km) |
| Helensburgh to Salou | 1,065.39 mi (1,714.58 km) |
| Helensburgh to Salt | 1,026.82 mi (1,652.51 km) |
| Helensburgh to Salvatierra de Mino | 977.32 mi (1,572.85 km) |
| Helensburgh to Sama | 879.64 mi (1,415.64 km) |
| Helensburgh to San Adrian de Besos | 1,055.14 mi (1,698.09 km) |
| Helensburgh to San Agustin de Guadalix | 1,061.00 mi (1,707.51 km) |
| Helensburgh to San Andres de la Barca | 1,050.82 mi (1,691.14 km) |
| Helensburgh to San Andres de Llevaneras | 1,049.21 mi (1,688.55 km) |
| Helensburgh to San Andres del Rabanedo | 926.65 mi (1,491.29 km) |
| Helensburgh to San Bartolome | 2,013.74 mi (3,240.80 km) |
