| Niagara Falls to Rosolini | 4,722.36 mi (7,599.90 km) |
| Niagara Falls to Rossano | 4,676.31 mi (7,525.79 km) |
| Niagara Falls to Rottofreno | 4,161.60 mi (6,697.45 km) |
| Niagara Falls to Rovato | 4,160.96 mi (6,696.41 km) |
| Niagara Falls to Roverbella | 4,203.50 mi (6,764.88 km) |
| Niagara Falls to Rovereto | 4,191.65 mi (6,745.81 km) |
| Niagara Falls to Rovigo | 4,252.29 mi (6,843.41 km) |
| Niagara Falls to Rozzano | 4,133.14 mi (6,651.64 km) |
| Niagara Falls to Rubano | 4,238.33 mi (6,820.93 km) |
| Niagara Falls to Rubiera | 4,227.63 mi (6,803.72 km) |
| Niagara Falls to Ruffano | 4,725.55 mi (7,605.04 km) |
| Niagara Falls to Russi | 4,289.29 mi (6,902.95 km) |
| Niagara Falls to Rutigliano | 4,629.17 mi (7,449.92 km) |
| Niagara Falls to Ruvo di Puglia | 4,604.23 mi (7,409.80 km) |
| Niagara Falls to Sabaudia | 4,452.75 mi (7,166.01 km) |
