| Niagara Falls to Reichenbach/Vogtland | 4,065.56 mi (6,542.89 km) |
| Niagara Falls to Reinbek | 3,890.06 mi (6,260.44 km) |
| Niagara Falls to Reinfeld | 3,887.77 mi (6,256.76 km) |
| Niagara Falls to Reinheim | 3,961.48 mi (6,375.39 km) |
| Niagara Falls to Reiskirchen | 3,935.12 mi (6,332.97 km) |
| Niagara Falls to Rellingen | 3,869.85 mi (6,227.92 km) |
| Niagara Falls to Remagen | 3,874.37 mi (6,235.19 km) |
| Niagara Falls to Remscheid | 3,853.33 mi (6,201.33 km) |
| Niagara Falls to Rendsburg | 3,843.35 mi (6,185.27 km) |
| Niagara Falls to Renningen | 4,002.43 mi (6,441.28 km) |
| Niagara Falls to Reutlingen | 4,023.48 mi (6,475.16 km) |
| Niagara Falls to Rhaude | 3,802.76 mi (6,119.95 km) |
| Niagara Falls to Rheda-Wiedenbruck | 3,873.38 mi (6,233.61 km) |
| Niagara Falls to Rhede | 3,813.36 mi (6,137.00 km) |
| Niagara Falls to Rheinau | 3,966.50 mi (6,383.46 km) |
