| South Portland to Racale | 4,331.42 mi (6,970.74 km) |
| South Portland to Racconigi | 3,705.45 mi (5,963.35 km) |
| South Portland to Raffadali | 4,231.90 mi (6,810.59 km) |
| South Portland to Ragusa | 4,304.86 mi (6,928.00 km) |
| South Portland to Ramacca | 4,285.15 mi (6,896.28 km) |
| South Portland to Randazzo | 4,276.41 mi (6,882.22 km) |
| South Portland to Rapallo | 3,786.16 mi (6,093.24 km) |
| South Portland to Ravanusa | 4,256.94 mi (6,850.89 km) |
| South Portland to Ravenna | 3,910.71 mi (6,293.69 km) |
| South Portland to Recanati | 4,004.54 mi (6,444.69 km) |
| South Portland to Recco | 3,782.01 mi (6,086.56 km) |
| South Portland to Reggello | 3,908.12 mi (6,289.51 km) |
| South Portland to Reggio di Calabria | 4,298.34 mi (6,917.51 km) |
| South Portland to Reggio Emilia | 3,834.15 mi (6,170.47 km) |
| South Portland to Reggiolo | 3,834.50 mi (6,171.03 km) |
