| McDonough to Sesimbra | 4,094.14 mi (6,588.89 km) |
| McDonough to Setubal | 4,102.71 mi (6,602.68 km) |
| McDonough to Sever do Vouga | 4,077.26 mi (6,561.72 km) |
| McDonough to Silves | 4,158.65 mi (6,692.70 km) |
| McDonough to Sines | 4,117.92 mi (6,627.15 km) |
| McDonough to Sintra | 4,071.07 mi (6,551.75 km) |
| McDonough to Sobrado de Paiva | 4,075.35 mi (6,558.64 km) |
| McDonough to Sobral de Monte Agraco | 4,077.86 mi (6,562.67 km) |
| McDonough to Soure | 4,079.77 mi (6,565.75 km) |
| McDonough to Tabua | 4,102.58 mi (6,602.46 km) |
| McDonough to Tavira | 4,200.86 mi (6,760.63 km) |
| McDonough to Tomar | 4,101.10 mi (6,600.08 km) |
| McDonough to Tondela | 4,096.26 mi (6,592.30 km) |
| McDonough to Torre de Moncorvo | 4,127.14 mi (6,641.99 km) |
| McDonough to Torres Novas | 4,098.40 mi (6,595.74 km) |
