| Houghton le Spring to Carlsbad (New Mexico) | 4,884.51 mi (7,860.86 km) |
| Houghton le Spring to Carmel (Indiana) | 3,836.30 mi (6,173.92 km) |
| Houghton le Spring to Carmichael (California) | 5,068.27 mi (8,156.59 km) |
| Houghton le Spring to Carney (Maryland) | 3,501.26 mi (5,634.73 km) |
| Houghton le Spring to Carnot-Moon (Pennsylvania) | 3,588.30 mi (5,774.81 km) |
| Houghton le Spring to Carol Stream (Illinois) | 3,811.95 mi (6,134.75 km) |
| Houghton le Spring to Carolina (Puerto Rico) | 4,176.32 mi (6,721.13 km) |
| Houghton le Spring to Carolina Forest (South Carolina) | 3,872.77 mi (6,232.61 km) |
| Houghton le Spring to Carpentersville (Illinois) | 3,807.58 mi (6,127.71 km) |
| Houghton le Spring to Carpinteria (California) | 5,265.24 mi (8,473.58 km) |
| Houghton le Spring to Carrboro (North Carolina) | 3,770.62 mi (6,068.22 km) |
| Houghton le Spring to Carroll (Iowa) | 4,042.10 mi (6,505.14 km) |
| Houghton le Spring to Carrollton (Georgia) | 4,120.15 mi (6,630.74 km) |
| Houghton le Spring to Carrollton (Texas) | 4,591.81 mi (7,389.81 km) |
| Houghton le Spring to Carrollwood (Florida) | 4,309.92 mi (6,936.15 km) |
