| Willoughby to Rockport (Texas) | 1,289.76 mi (2,075.67 km) |
| Willoughby to Rockville (Maryland) | 285.38 mi (459.28 km) |
| Willoughby to Rockville Centre (New York) | 409.72 mi (659.38 km) |
| Willoughby to Rockwall (Texas) | 1,020.46 mi (1,642.27 km) |
| Willoughby to Rocky Mount (North Carolina) | 437.54 mi (704.15 km) |
| Willoughby to Rocky Point (New York) | 442.37 mi (711.92 km) |
| Willoughby to Rocky River (Ohio) | 25.97 mi (41.80 km) |
| Willoughby to Roessleville (New York) | 396.35 mi (637.87 km) |
| Willoughby to Rogers (Arkansas) | 776.12 mi (1,249.04 km) |
| Willoughby to Rogers (Minnesota) | 657.11 mi (1,057.52 km) |
| Willoughby to Rohnert Park (California) | 2,176.34 mi (3,502.49 km) |
| Willoughby to Rolla (Missouri) | 605.57 mi (974.57 km) |
| Willoughby to Rolling Meadows (Illinois) | 341.69 mi (549.90 km) |
| Willoughby to Roma (Texas) | 1,451.14 mi (2,335.39 km) |
| Willoughby to Rome (Georgia) | 549.70 mi (884.66 km) |
