| Holtsville to Rockville (Maryland) | 248.31 mi (399.62 km) |
| Holtsville to Rockville Centre (New York) | 32.72 mi (52.65 km) |
| Holtsville to Rockwall (Texas) | 1,397.92 mi (2,249.73 km) |
| Holtsville to Rocky Mount (North Carolina) | 422.27 mi (679.58 km) |
| Holtsville to Rocky Point (New York) | 10.23 mi (16.46 km) |
| Holtsville to Rocky River (Ohio) | 460.35 mi (740.85 km) |
| Holtsville to Roessleville (New York) | 135.85 mi (218.62 km) |
| Holtsville to Rogers (Arkansas) | 1,178.65 mi (1,896.86 km) |
| Holtsville to Rogers (Minnesota) | 1,077.35 mi (1,733.83 km) |
| Holtsville to Rohnert Park (California) | 2,614.01 mi (4,206.84 km) |
| Holtsville to Rolla (Missouri) | 1,016.92 mi (1,636.57 km) |
| Holtsville to Rolling Meadows (Illinois) | 779.75 mi (1,254.89 km) |
| Holtsville to Roma (Texas) | 1,783.67 mi (2,870.55 km) |
| Holtsville to Rome (Georgia) | 803.19 mi (1,292.60 km) |
| Holtsville to Rome (New York) | 208.73 mi (335.92 km) |
