| Holt to Carrollwood (Florida) | 1,013.95 mi (1,631.79 km) |
| Holt to Carson (California) | 1,913.91 mi (3,080.14 km) |
| Holt to Carson City (Nevada) | 1,841.55 mi (2,963.69 km) |
| Holt to Carteret (New Jersey) | 550.44 mi (885.85 km) |
| Holt to Cartersville (Georgia) | 585.90 mi (942.91 km) |
| Holt to Carthage (Missouri) | 642.23 mi (1,033.57 km) |
| Holt to Cary (Illinois) | 191.93 mi (308.88 km) |
| Holt to Cary (North Carolina) | 563.70 mi (907.18 km) |
| Holt to Casa de Oro-Mount Helix (California) | 1,885.86 mi (3,035.01 km) |
| Holt to Casa Grande (Arizona) | 1,622.79 mi (2,611.63 km) |
| Holt to Casas Adobes (Arizona) | 1,607.49 mi (2,587.00 km) |
| Holt to Cascades (Virginia) | 448.21 mi (721.32 km) |
| Holt to Casper (Wyoming) | 1,102.69 mi (1,774.62 km) |
| Holt to Casselberry (Florida) | 982.32 mi (1,580.89 km) |
| Holt to Castaic (California) | 1,912.01 mi (3,077.09 km) |
