| Cave to Carlsbad (New Mexico) | 5,941.40 mi (9,561.76 km) |
| Cave to Carmel (Indiana) | 4,852.91 mi (7,810.01 km) |
| Cave to Carmichael (California) | 6,179.04 mi (9,944.21 km) |
| Cave to Carney (Maryland) | 4,464.41 mi (7,184.77 km) |
| Cave to Carnot-Moon (Pennsylvania) | 4,580.48 mi (7,371.57 km) |
| Cave to Carol Stream (Illinois) | 4,849.20 mi (7,804.04 km) |
| Cave to Carolina (Puerto Rico) | 4,817.60 mi (7,753.17 km) |
| Cave to Carolina Forest (South Carolina) | 4,800.28 mi (7,725.30 km) |
| Cave to Carpentersville (Illinois) | 4,846.65 mi (7,799.93 km) |
| Cave to Carpinteria (California) | 6,370.36 mi (10,252.11 km) |
| Cave to Carrboro (North Carolina) | 4,718.32 mi (7,593.40 km) |
| Cave to Carroll (Iowa) | 5,104.65 mi (8,215.13 km) |
| Cave to Carrollton (Georgia) | 5,085.84 mi (8,184.87 km) |
| Cave to Carrollton (Texas) | 5,618.58 mi (9,042.24 km) |
| Cave to Carrollwood (Florida) | 5,213.32 mi (8,390.03 km) |
