| Willoughby to Cloverleaf (Texas) | 1,122.94 mi (1,807.19 km) |
| Willoughby to Cloverly (Maryland) | 290.87 mi (468.10 km) |
| Willoughby to Clovis (California) | 2,057.94 mi (3,311.93 km) |
| Willoughby to Clovis (New Mexico) | 1,281.18 mi (2,061.86 km) |
| Willoughby to Clute (Texas) | 1,172.48 mi (1,886.92 km) |
| Willoughby to Coachella (California) | 1,962.83 mi (3,158.87 km) |
| Willoughby to Coalinga (California) | 2,108.64 mi (3,393.52 km) |
| Willoughby to Coamo (Puerto Rico) | 1,854.85 mi (2,985.09 km) |
| Willoughby to Coatesville (Pennsylvania) | 313.87 mi (505.13 km) |
| Willoughby to Cockeysville (Maryland) | 292.01 mi (469.95 km) |
| Willoughby to Cocoa (Florida) | 917.16 mi (1,476.02 km) |
| Willoughby to Cocoa Beach (Florida) | 920.90 mi (1,482.05 km) |
| Willoughby to Coconut Creek (Florida) | 1,063.94 mi (1,712.25 km) |
| Willoughby to Coeur d'Alene (Idaho) | 1,771.63 mi (2,851.17 km) |
| Willoughby to Cohoes (New York) | 401.57 mi (646.26 km) |
