| South Portland to Rende | 4,273.37 mi (6,877.32 km) |
| South Portland to Resana | 3,857.64 mi (6,208.27 km) |
| South Portland to Rescaldina | 3,731.67 mi (6,005.54 km) |
| South Portland to Rezzato | 3,792.99 mi (6,104.24 km) |
| South Portland to Rho | 3,737.96 mi (6,015.67 km) |
| South Portland to Ribera | 4,216.05 mi (6,785.08 km) |
| South Portland to Riccione Marina | 3,944.54 mi (6,348.13 km) |
| South Portland to Riesi | 4,261.44 mi (6,858.12 km) |
| South Portland to Rieti | 4,011.26 mi (6,455.49 km) |
| South Portland to Rignano Flaminio | 4,002.60 mi (6,441.56 km) |
| South Portland to Rignano sull'Arno | 3,903.14 mi (6,281.50 km) |
| South Portland to Rimini | 3,938.95 mi (6,339.12 km) |
| South Portland to Rionero in Vulture | 4,188.89 mi (6,741.36 km) |
| South Portland to Riposto | 4,293.54 mi (6,909.78 km) |
| South Portland to Riva del Garda | 3,803.00 mi (6,120.33 km) |
