| Willebroek to Rockville (Maryland) | 3,854.23 mi (6,202.78 km) |
| Willebroek to Rockville Centre (New York) | 3,641.40 mi (5,860.27 km) |
| Willebroek to Rockwall (Texas) | 4,912.90 mi (7,906.55 km) |
| Willebroek to Rocky Mount (North Carolina) | 4,024.93 mi (6,477.49 km) |
| Willebroek to Rocky Point (New York) | 3,601.10 mi (5,795.41 km) |
| Willebroek to Rocky River (Ohio) | 3,931.02 mi (6,326.37 km) |
| Willebroek to Roessleville (New York) | 3,559.73 mi (5,728.83 km) |
| Willebroek to Rogers (Arkansas) | 4,650.93 mi (7,484.95 km) |
| Willebroek to Rogers (Minnesota) | 4,188.39 mi (6,740.56 km) |
| Willebroek to Rohnert Park (California) | 5,479.41 mi (8,818.25 km) |
| Willebroek to Rolla (Missouri) | 4,478.76 mi (7,207.86 km) |
| Willebroek to Rolling Meadows (Illinois) | 4,137.42 mi (6,658.53 km) |
| Willebroek to Roma (Texas) | 5,356.89 mi (8,621.09 km) |
| Willebroek to Rome (Georgia) | 4,405.85 mi (7,090.54 km) |
| Willebroek to Rome (New York) | 3,604.27 mi (5,800.52 km) |
