| Fort Collins to Sesimbra | 4,835.24 mi (7,781.57 km) |
| Fort Collins to Setubal | 4,840.93 mi (7,790.72 km) |
| Fort Collins to Sever do Vouga | 4,773.08 mi (7,681.54 km) |
| Fort Collins to Silves | 4,916.12 mi (7,911.72 km) |
| Fort Collins to Sines | 4,865.63 mi (7,830.47 km) |
| Fort Collins to Sintra | 4,808.13 mi (7,737.94 km) |
| Fort Collins to Sobrado de Paiva | 4,765.10 mi (7,668.68 km) |
| Fort Collins to Sobral de Monte Agraco | 4,809.44 mi (7,740.05 km) |
| Fort Collins to Soure | 4,789.60 mi (7,708.12 km) |
| Fort Collins to Tabua | 4,802.61 mi (7,729.06 km) |
| Fort Collins to Tavira | 4,953.62 mi (7,972.08 km) |
| Fort Collins to Tomar | 4,817.28 mi (7,752.66 km) |
| Fort Collins to Tondela | 4,793.92 mi (7,715.06 km) |
| Fort Collins to Torre de Moncorvo | 4,805.82 mi (7,734.21 km) |
| Fort Collins to Torres Novas | 4,817.74 mi (7,753.41 km) |
