| Niagara Falls to Radauti | 4,674.73 mi (7,523.26 km) |
| Niagara Falls to Ramnicu Sarat | 4,827.16 mi (7,768.57 km) |
| Niagara Falls to Ramnicu Valcea | 4,741.00 mi (7,629.90 km) |
| Niagara Falls to Rasnov | 4,759.13 mi (7,659.08 km) |
| Niagara Falls to Reghin | 4,678.83 mi (7,529.86 km) |
| Niagara Falls to Resita | 4,639.09 mi (7,465.89 km) |
| Niagara Falls to Roman | 4,751.69 mi (7,647.11 km) |
| Niagara Falls to Rosiori de Vede | 4,808.76 mi (7,738.95 km) |
| Niagara Falls to Rovinari | 4,704.12 mi (7,570.55 km) |
| Niagara Falls to Roznov | 4,741.07 mi (7,630.02 km) |
| Niagara Falls to Sabaoani | 4,744.91 mi (7,636.20 km) |
| Niagara Falls to Sacele | 4,767.06 mi (7,671.84 km) |
| Niagara Falls to Sacueni | 4,558.16 mi (7,335.64 km) |
| Niagara Falls to Salcea | 4,699.30 mi (7,562.79 km) |
| Niagara Falls to Salonta | 4,565.51 mi (7,347.48 km) |
