| Niagara Falls to Rivalta di Torino | 4,078.67 mi (6,563.98 km) |
| Niagara Falls to Rivarolo Canavese | 4,076.09 mi (6,559.83 km) |
| Niagara Falls to Rivoli | 4,077.34 mi (6,561.84 km) |
| Niagara Falls to Rocca di Papa | 4,420.94 mi (7,114.82 km) |
| Niagara Falls to Rocca Priora | 4,422.37 mi (7,117.11 km) |
| Niagara Falls to Roccapiemonte | 4,544.78 mi (7,314.12 km) |
| Niagara Falls to Roccastrada | 4,306.93 mi (6,931.33 km) |
| Niagara Falls to Romano di Lombardia | 4,152.71 mi (6,683.13 km) |
| Niagara Falls to Rome | 4,406.07 mi (7,090.88 km) |
| Niagara Falls to Roncade | 4,254.85 mi (6,847.51 km) |
| Niagara Falls to Ronchi dei Legionari | 4,291.60 mi (6,906.67 km) |
| Niagara Falls to Ronciglione | 4,379.01 mi (7,047.33 km) |
| Niagara Falls to Rosa | 4,226.82 mi (6,802.41 km) |
| Niagara Falls to Rosarno | 4,695.04 mi (7,555.94 km) |
| Niagara Falls to Rosignano Marittimo | 4,262.54 mi (6,859.90 km) |
