| Fort Collins to Selargius | 5,542.54 mi (8,919.85 km) |
| Fort Collins to Selvazzano Dentro | 5,333.38 mi (8,583.25 km) |
| Fort Collins to Senago | 5,233.05 mi (8,421.78 km) |
| Fort Collins to Senigallia | 5,465.72 mi (8,796.23 km) |
| Fort Collins to Seravezza | 5,348.41 mi (8,607.43 km) |
| Fort Collins to Seregno | 5,232.13 mi (8,420.30 km) |
| Fort Collins to Seriate | 5,248.28 mi (8,446.28 km) |
| Fort Collins to Sermoneta | 5,567.10 mi (8,959.38 km) |
| Fort Collins to Serramanna | 5,525.25 mi (8,892.04 km) |
| Fort Collins to Serravalle Pistoiese | 5,374.27 mi (8,649.05 km) |
| Fort Collins to Sessa Aurunca | 5,616.51 mi (9,038.90 km) |
| Fort Collins to Sesto Calende | 5,208.51 mi (8,382.29 km) |
| Fort Collins to Sesto Fiorentino | 5,390.32 mi (8,674.88 km) |
| Fort Collins to Sesto San Giovanni | 5,238.92 mi (8,431.23 km) |
| Fort Collins to Sestri Levante | 5,305.59 mi (8,538.53 km) |
