| Formia to Setubal | 1,204.66 mi (1,938.72 km) |
| Formia to Sever do Vouga | 1,143.86 mi (1,840.87 km) |
| Formia to Silves | 1,210.08 mi (1,947.44 km) |
| Formia to Sines | 1,214.74 mi (1,954.94 km) |
| Formia to Sintra | 1,225.25 mi (1,971.84 km) |
| Formia to Sobrado de Paiva | 1,135.61 mi (1,827.59 km) |
| Formia to Sobral de Monte Agraco | 1,209.06 mi (1,945.80 km) |
| Formia to Soure | 1,166.06 mi (1,876.59 km) |
| Formia to Tabua | 1,130.72 mi (1,819.72 km) |
| Formia to Tavira | 1,171.09 mi (1,884.69 km) |
| Formia to Tomar | 1,161.33 mi (1,868.98 km) |
| Formia to Tondela | 1,131.65 mi (1,821.21 km) |
| Formia to Torre de Moncorvo | 1,075.61 mi (1,731.03 km) |
| Formia to Torres Novas | 1,169.46 mi (1,882.06 km) |
| Formia to Torres Vedras | 1,213.89 mi (1,953.56 km) |
