| Willoughby to Reading (Pennsylvania) | 299.71 mi (482.34 km) |
| Willoughby to Red Bank (New Jersey) | 393.05 mi (632.56 km) |
| Willoughby to Red Bank (Tennessee) | 498.02 mi (801.48 km) |
| Willoughby to Red Bluff (California) | 2,114.55 mi (3,403.04 km) |
| Willoughby to Red Hill (South Carolina) | 559.14 mi (899.85 km) |
| Willoughby to Red Oak (Texas) | 1,053.69 mi (1,695.75 km) |
| Willoughby to Red Wing (Minnesota) | 599.38 mi (964.62 km) |
| Willoughby to Redan (Georgia) | 566.60 mi (911.85 km) |
| Willoughby to Redding (California) | 2,113.26 mi (3,400.96 km) |
| Willoughby to Redland (Maryland) | 283.54 mi (456.31 km) |
| Willoughby to Redlands (California) | 2,004.80 mi (3,226.42 km) |
| Willoughby to Redmond (Oregon) | 1,999.65 mi (3,218.13 km) |
| Willoughby to Redmond (Washington) | 2,019.14 mi (3,249.49 km) |
| Willoughby to Redondo Beach (California) | 2,072.78 mi (3,335.82 km) |
| Willoughby to Redwood City (California) | 2,172.10 mi (3,495.66 km) |
