| Willoughby to Cedar Park (Texas) | 1,192.87 mi (1,919.74 km) |
| Willoughby to Cedar Rapids (Iowa) | 529.07 mi (851.46 km) |
| Willoughby to Cedarburg (Wisconsin) | 354.15 mi (569.95 km) |
| Willoughby to Celebration (Florida) | 921.44 mi (1,482.92 km) |
| Willoughby to Celina (Ohio) | 180.68 mi (290.78 km) |
| Willoughby to Celina (Texas) | 1,018.76 mi (1,639.54 km) |
| Willoughby to Centennial (Colorado) | 1,234.60 mi (1,986.90 km) |
| Willoughby to Center Point (Alabama) | 623.35 mi (1,003.18 km) |
| Willoughby to Centereach (New York) | 435.63 mi (701.08 km) |
| Willoughby to Centerton (Arkansas) | 781.46 mi (1,257.64 km) |
| Willoughby to Centerville (Ohio) | 199.75 mi (321.47 km) |
| Willoughby to Centerville (Utah) | 1,574.77 mi (2,534.34 km) |
| Willoughby to Central (Louisiana) | 934.40 mi (1,503.77 km) |
| Willoughby to Central Falls (Rhode Island) | 516.09 mi (830.56 km) |
| Willoughby to Central Islip (New York) | 430.89 mi (693.44 km) |
