| Lake Monticello to Sesimbra | 3,664.94 mi (5,898.16 km) |
| Lake Monticello to Setubal | 3,673.13 mi (5,911.34 km) |
| Lake Monticello to Sever do Vouga | 3,641.93 mi (5,861.12 km) |
| Lake Monticello to Silves | 3,732.28 mi (6,006.52 km) |
| Lake Monticello to Sines | 3,689.83 mi (5,938.20 km) |
| Lake Monticello to Sintra | 3,641.16 mi (5,859.88 km) |
| Lake Monticello to Sobrado de Paiva | 3,639.29 mi (5,856.87 km) |
| Lake Monticello to Sobral de Monte Agraco | 3,647.20 mi (5,869.60 km) |
| Lake Monticello to Soure | 3,646.19 mi (5,867.97 km) |
| Lake Monticello to Tabua | 3,667.87 mi (5,902.87 km) |
| Lake Monticello to Tavira | 3,773.96 mi (6,073.60 km) |
| Lake Monticello to Tomar | 3,668.45 mi (5,903.80 km) |
| Lake Monticello to Tondela | 3,661.24 mi (5,892.19 km) |
| Lake Monticello to Torre de Moncorvo | 3,690.04 mi (5,938.55 km) |
| Lake Monticello to Torres Novas | 3,666.16 mi (5,900.12 km) |
