| Allouez to Cloverly (Maryland) | 677.40 mi (1,090.16 km) |
| Allouez to Clovis (California) | 1,729.07 mi (2,782.66 km) |
| Allouez to Clovis (New Mexico) | 1,062.41 mi (1,709.78 km) |
| Allouez to Clute (Texas) | 1,141.40 mi (1,836.90 km) |
| Allouez to Coachella (California) | 1,670.53 mi (2,688.47 km) |
| Allouez to Coalinga (California) | 1,782.88 mi (2,869.27 km) |
| Allouez to Coamo (Puerto Rico) | 2,212.56 mi (3,560.77 km) |
| Allouez to Coatesville (Pennsylvania) | 696.22 mi (1,120.47 km) |
| Allouez to Cockeysville (Maryland) | 678.51 mi (1,091.96 km) |
| Allouez to Cocoa (Florida) | 1,181.46 mi (1,901.37 km) |
| Allouez to Cocoa Beach (Florida) | 1,187.33 mi (1,910.82 km) |
| Allouez to Coconut Creek (Florida) | 1,330.71 mi (2,141.57 km) |
| Allouez to Coeur d'Alene (Idaho) | 1,388.25 mi (2,234.17 km) |
| Allouez to Cohoes (New York) | 724.73 mi (1,166.34 km) |
| Allouez to Cold Springs (Nevada) | 1,660.31 mi (2,672.01 km) |
