| Merthyr Tudful to San Lorenzo de Descardazar | 897.04 mi (1,443.65 km) |
| Merthyr Tudful to San Lorenzo de El Escorial | 771.21 mi (1,241.14 km) |
| Merthyr Tudful to San Martin de la Vega | 796.95 mi (1,282.56 km) |
| Merthyr Tudful to San Martin de Valdeiglesias | 787.72 mi (1,267.71 km) |
| Merthyr Tudful to San Pedro de Ribas | 764.18 mi (1,229.82 km) |
| Merthyr Tudful to San Roque | 1,077.77 mi (1,734.50 km) |
| Merthyr Tudful to San Sebastian de la Gomera | 1,781.92 mi (2,867.73 km) |
| Merthyr Tudful to San Sebastian de los Reyes | 773.67 mi (1,245.09 km) |
| Merthyr Tudful to San Vicente de Baracaldo | 583.82 mi (939.57 km) |
| Merthyr Tudful to San Vicente de Castellet | 738.77 mi (1,188.94 km) |
| Merthyr Tudful to San Vicente del Raspeig | 932.42 mi (1,500.58 km) |
| Merthyr Tudful to San Vicente dels Horts | 758.99 mi (1,221.48 km) |
| Merthyr Tudful to Sangenjo | 693.65 mi (1,116.33 km) |
| Merthyr Tudful to Sanlucar de Barrameda | 1,044.93 mi (1,681.66 km) |
| Merthyr Tudful to Sanlucar la Mayor | 1,001.65 mi (1,612.00 km) |
