| Willoughby to Ridgefield Park (New Jersey) | 387.55 mi (623.71 km) |
| Willoughby to Ridgeland (Mississippi) | 798.04 mi (1,284.31 km) |
| Willoughby to Ridgewood (New Jersey) | 381.27 mi (613.59 km) |
| Willoughby to Rifle (Colorado) | 1,385.50 mi (2,229.74 km) |
| Willoughby to Rincon (Georgia) | 646.18 mi (1,039.92 km) |
| Willoughby to Ringwood (New Jersey) | 371.61 mi (598.05 km) |
| Willoughby to Río Grande (Puerto Rico) | 1,851.12 mi (2,979.09 km) |
| Willoughby to Rio Grande City (Texas) | 1,445.89 mi (2,326.94 km) |
| Willoughby to Rio Linda (California) | 2,104.57 mi (3,386.97 km) |
| Willoughby to Rio Rancho (New Mexico) | 1,430.86 mi (2,302.74 km) |
| Willoughby to Rio Rico (Arizona) | 1,773.63 mi (2,854.38 km) |
| Willoughby to Ripon (California) | 2,110.20 mi (3,396.03 km) |
| Willoughby to River Edge (New Jersey) | 385.71 mi (620.74 km) |
| Willoughby to River Falls (Wisconsin) | 605.93 mi (975.14 km) |
| Willoughby to River Forest (Illinois) | 330.74 mi (532.27 km) |
