| Watford to San Lorenzo de Descardazar | 850.80 mi (1,369.23 km) |
| Watford to San Lorenzo de El Escorial | 784.78 mi (1,262.98 km) |
| Watford to San Martin de la Vega | 805.21 mi (1,295.86 km) |
| Watford to San Martin de Valdeiglesias | 803.14 mi (1,292.53 km) |
| Watford to San Pedro de Ribas | 725.57 mi (1,167.70 km) |
| Watford to San Roque | 1,095.00 mi (1,762.23 km) |
| Watford to San Sebastian de la Gomera | 1,843.67 mi (2,967.09 km) |
| Watford to San Sebastian de los Reyes | 782.74 mi (1,259.69 km) |
| Watford to San Vicente de Baracaldo | 589.95 mi (949.44 km) |
| Watford to San Vicente de Castellet | 698.39 mi (1,123.94 km) |
| Watford to San Vicente del Raspeig | 916.10 mi (1,474.32 km) |
| Watford to San Vicente dels Horts | 718.08 mi (1,155.63 km) |
| Watford to Sangenjo | 751.00 mi (1,208.62 km) |
| Watford to Sanlucar de Barrameda | 1,069.21 mi (1,720.73 km) |
| Watford to Sanlucar la Mayor | 1,025.89 mi (1,651.01 km) |
