| South Portland to Rosolini | 4,319.07 mi (6,950.88 km) |
| South Portland to Rossano | 4,283.78 mi (6,894.08 km) |
| South Portland to Rottofreno | 3,775.76 mi (6,076.50 km) |
| South Portland to Rovato | 3,777.76 mi (6,079.72 km) |
| South Portland to Roverbella | 3,820.40 mi (6,148.35 km) |
| South Portland to Rovereto | 3,811.39 mi (6,133.84 km) |
| South Portland to Rovigo | 3,870.19 mi (6,228.47 km) |
| South Portland to Rozzano | 3,747.89 mi (6,031.65 km) |
| South Portland to Rubano | 3,857.54 mi (6,208.12 km) |
| South Portland to Rubiera | 3,842.26 mi (6,183.52 km) |
| South Portland to Ruffano | 4,337.22 mi (6,980.07 km) |
| South Portland to Russi | 3,904.97 mi (6,284.44 km) |
| South Portland to Rutigliano | 4,241.42 mi (6,825.91 km) |
| South Portland to Ruvo di Puglia | 4,216.34 mi (6,785.54 km) |
| South Portland to Sabaudia | 4,059.51 mi (6,533.15 km) |
