| South Portland to Reichenbach/Vogtland | 3,707.64 mi (5,966.88 km) |
| South Portland to Reinbek | 3,543.19 mi (5,702.22 km) |
| South Portland to Reinfeld | 3,542.98 mi (5,701.87 km) |
| South Portland to Reinheim | 3,594.33 mi (5,784.51 km) |
| South Portland to Reiskirchen | 3,571.57 mi (5,747.88 km) |
| South Portland to Rellingen | 3,523.07 mi (5,669.83 km) |
| South Portland to Remagen | 3,508.28 mi (5,646.02 km) |
| South Portland to Remscheid | 3,490.10 mi (5,616.77 km) |
| South Portland to Rendsburg | 3,499.82 mi (5,632.42 km) |
| South Portland to Renningen | 3,630.68 mi (5,843.01 km) |
| South Portland to Reutlingen | 3,650.94 mi (5,875.62 km) |
| South Portland to Rhaude | 3,450.07 mi (5,552.35 km) |
| South Portland to Rheda-Wiedenbruck | 3,515.04 mi (5,656.90 km) |
| South Portland to Rhede | 3,452.60 mi (5,556.42 km) |
| South Portland to Rheinau | 3,592.76 mi (5,781.99 km) |
