| Formia to Sabinanigo | 723.43 mi (1,164.24 km) |
| Formia to Sagunto | 737.48 mi (1,186.85 km) |
| Formia to Salamanca | 1,001.79 mi (1,612.23 km) |
| Formia to Salobrena | 973.05 mi (1,565.98 km) |
| Formia to Salou | 648.90 mi (1,044.30 km) |
| Formia to Salt | 561.07 mi (902.95 km) |
| Formia to Salvatierra de Mino | 1,139.60 mi (1,834.01 km) |
| Formia to Sama | 994.23 mi (1,600.06 km) |
| Formia to San Adrian de Besos | 590.90 mi (950.96 km) |
| Formia to San Agustin de Guadalix | 898.37 mi (1,445.79 km) |
| Formia to San Andres de la Barca | 603.33 mi (970.97 km) |
| Formia to San Andres de Llevaneras | 576.86 mi (928.36 km) |
| Formia to San Andres del Rabanedo | 989.86 mi (1,593.02 km) |
| Formia to San Bartolome | 1,885.72 mi (3,034.78 km) |
| Formia to San Baudilio de Llobregat | 600.35 mi (966.17 km) |
