| Houthulst to Rockville (Maryland) | 3,799.15 mi (6,114.15 km) |
| Houthulst to Rockville Centre (New York) | 3,586.01 mi (5,771.12 km) |
| Houthulst to Rockwall (Texas) | 4,861.97 mi (7,824.59 km) |
| Houthulst to Rocky Mount (North Carolina) | 3,968.74 mi (6,387.06 km) |
| Houthulst to Rocky Point (New York) | 3,545.63 mi (5,706.15 km) |
| Houthulst to Rocky River (Ohio) | 3,878.62 mi (6,242.03 km) |
| Houthulst to Roessleville (New York) | 3,505.39 mi (5,641.38 km) |
| Houthulst to Rogers (Arkansas) | 4,600.58 mi (7,403.91 km) |
| Houthulst to Rogers (Minnesota) | 4,142.47 mi (6,666.65 km) |
| Houthulst to Rohnert Park (California) | 5,444.49 mi (8,762.06 km) |
| Houthulst to Rolla (Missouri) | 4,428.22 mi (7,126.52 km) |
| Houthulst to Rolling Meadows (Illinois) | 4,087.54 mi (6,578.27 km) |
| Houthulst to Roma (Texas) | 5,304.44 mi (8,536.68 km) |
| Houthulst to Rome (Georgia) | 4,351.30 mi (7,002.74 km) |
| Houthulst to Rome (New York) | 3,550.73 mi (5,714.35 km) |
