| Willoughby to Camarillo (California) | 2,095.66 mi (3,372.64 km) |
| Willoughby to Camas (Washington) | 2,047.19 mi (3,294.63 km) |
| Willoughby to Cambridge (Maryland) | 353.52 mi (568.93 km) |
| Willoughby to Cambridge (Massachusetts) | 530.33 mi (853.49 km) |
| Willoughby to Camden (Arkansas) | 837.42 mi (1,347.70 km) |
| Willoughby to Camden (New Jersey) | 350.04 mi (563.33 km) |
| Willoughby to Cameron Park (California) | 2,081.62 mi (3,350.04 km) |
| Willoughby to Camp Pendleton South (California) | 2,041.40 mi (3,285.32 km) |
| Willoughby to Camp Springs (Maryland) | 307.48 mi (494.83 km) |
| Willoughby to Camp Verde (Arizona) | 1,715.91 mi (2,761.49 km) |
| Willoughby to Campbell (California) | 2,163.58 mi (3,481.95 km) |
| Willoughby to Campbellsville (Kentucky) | 363.93 mi (585.69 km) |
| Willoughby to Campton Hills (Illinois) | 361.50 mi (581.77 km) |
| Willoughby to Canby (Oregon) | 2,062.56 mi (3,319.37 km) |
| Willoughby to Candelaria (Puerto Rico) | 1,838.60 mi (2,958.94 km) |
