| Duncan to Rury | 5,498.48 mi (8,848.94 km) |
| Duncan to Rybnik | 5,424.24 mi (8,729.48 km) |
| Duncan to Ryki | 5,461.48 mi (8,789.41 km) |
| Duncan to Rypin | 5,317.33 mi (8,557.41 km) |
| Duncan to Rzeszow | 5,539.61 mi (8,915.14 km) |
| Duncan to Sandomierz | 5,500.73 mi (8,852.57 km) |
| Duncan to Sanok | 5,569.66 mi (8,963.50 km) |
| Duncan to Sedziszow Malopolski | 5,528.36 mi (8,897.04 km) |
| Duncan to Sepolno Krajenskie | 5,239.85 mi (8,432.73 km) |
| Duncan to Sidlice | 5,233.64 mi (8,422.73 km) |
| Duncan to Siechnice | 5,334.80 mi (8,585.53 km) |
| Duncan to Siedlce | 5,446.72 mi (8,765.65 km) |
| Duncan to Siemianowice Slaskie | 5,429.94 mi (8,738.64 km) |
| Duncan to Siemiatycze | 5,452.28 mi (8,774.60 km) |
| Duncan to Sieradz | 5,361.86 mi (8,629.08 km) |
