| Mack to Cordele (Georgia) | 499.60 mi (804.03 km) |
| Mack to Corinth (Mississippi) | 359.09 mi (577.90 km) |
| Mack to Corinth (Texas) | 805.10 mi (1,295.68 km) |
| Mack to Cornelius (North Carolina) | 328.72 mi (529.02 km) |
| Mack to Cornelius (Oregon) | 1,988.64 mi (3,200.41 km) |
| Mack to Corning (New York) | 449.88 mi (724.01 km) |
| Mack to Corona (California) | 1,851.98 mi (2,980.48 km) |
| Mack to Coronado (California) | 1,861.41 mi (2,995.66 km) |
| Mack to Corpus Christi (Texas) | 1,074.33 mi (1,728.97 km) |
| Mack to Corsicana (Texas) | 821.46 mi (1,322.02 km) |
| Mack to Cortland (New York) | 503.75 mi (810.70 km) |
| Mack to Corvallis (Oregon) | 2,001.95 mi (3,221.83 km) |
| Mack to Coshocton (Ohio) | 168.99 mi (271.96 km) |
| Mack to Costa Mesa (California) | 1,875.52 mi (3,018.35 km) |
| Mack to Coto de Caza (California) | 1,859.76 mi (2,992.99 km) |
