| Barrhead to Rockville (Maryland) | 3,413.59 mi (5,493.65 km) |
| Barrhead to Rockville Centre (New York) | 3,203.79 mi (5,156.00 km) |
| Barrhead to Rockwall (Texas) | 4,447.38 mi (7,157.36 km) |
| Barrhead to Rocky Mount (North Carolina) | 3,593.01 mi (5,782.39 km) |
| Barrhead to Rocky Point (New York) | 3,164.21 mi (5,092.30 km) |
| Barrhead to Rocky River (Ohio) | 3,473.47 mi (5,590.01 km) |
| Barrhead to Roessleville (New York) | 3,114.50 mi (5,012.30 km) |
| Barrhead to Rogers (Arkansas) | 4,183.39 mi (6,732.51 km) |
| Barrhead to Rogers (Minnesota) | 3,708.67 mi (5,968.53 km) |
| Barrhead to Rohnert Park (California) | 4,995.07 mi (8,038.79 km) |
| Barrhead to Rolla (Missouri) | 4,012.09 mi (6,456.83 km) |
| Barrhead to Rolling Meadows (Illinois) | 3,668.58 mi (5,904.01 km) |
| Barrhead to Roma (Texas) | 4,897.75 mi (7,882.17 km) |
| Barrhead to Rome (Georgia) | 3,960.31 mi (6,373.50 km) |
| Barrhead to Rome (New York) | 3,153.75 mi (5,075.46 km) |
