| Fort Collins to Rury | 5,353.44 mi (8,615.53 km) |
| Fort Collins to Rybnik | 5,305.10 mi (8,537.74 km) |
| Fort Collins to Ryki | 5,316.47 mi (8,556.04 km) |
| Fort Collins to Rypin | 5,173.41 mi (8,325.80 km) |
| Fort Collins to Rzeszow | 5,404.92 mi (8,698.38 km) |
| Fort Collins to Sandomierz | 5,362.88 mi (8,630.71 km) |
| Fort Collins to Sanok | 5,437.14 mi (8,750.24 km) |
| Fort Collins to Sedziszow Malopolski | 5,394.85 mi (8,682.17 km) |
| Fort Collins to Sepolno Krajenskie | 5,101.27 mi (8,209.71 km) |
| Fort Collins to Sidlice | 5,084.20 mi (8,182.23 km) |
| Fort Collins to Siechnice | 5,215.14 mi (8,392.96 km) |
| Fort Collins to Siedlce | 5,296.67 mi (8,524.17 km) |
| Fort Collins to Siemianowice Slaskie | 5,307.48 mi (8,541.56 km) |
| Fort Collins to Siemiatycze | 5,297.88 mi (8,526.11 km) |
| Fort Collins to Sieradz | 5,231.21 mi (8,418.82 km) |
