| Niagara Falls to Rheinbach | 3,861.75 mi (6,214.88 km) |
| Niagara Falls to Rheinberg | 3,818.73 mi (6,145.64 km) |
| Niagara Falls to Rheine | 3,826.54 mi (6,158.23 km) |
| Niagara Falls to Rheinfelden (Baden) | 3,999.41 mi (6,436.43 km) |
| Niagara Falls to Ribnitz-Damgarten | 3,944.09 mi (6,347.40 km) |
| Niagara Falls to Richterich | 3,821.79 mi (6,150.58 km) |
| Niagara Falls to Riedlingen | 4,045.24 mi (6,510.18 km) |
| Niagara Falls to Riegelsberg | 3,905.80 mi (6,285.77 km) |
| Niagara Falls to Rielasingen-Worblingen | 4,035.17 mi (6,493.99 km) |
| Niagara Falls to Riesa | 4,077.42 mi (6,561.97 km) |
| Niagara Falls to Rietberg | 3,879.76 mi (6,243.87 km) |
| Niagara Falls to Rinteln | 3,891.03 mi (6,262.02 km) |
| Niagara Falls to Ritterhude | 3,846.49 mi (6,190.33 km) |
| Niagara Falls to Rodenbach | 3,958.16 mi (6,370.05 km) |
| Niagara Falls to Rodental | 4,031.06 mi (6,487.37 km) |
