| Houghton le Spring to Caguas (Puerto Rico) | 4,188.27 mi (6,740.36 km) |
| Houghton le Spring to Cahokia (Illinois) | 4,054.51 mi (6,525.10 km) |
| Houghton le Spring to Calabasas (California) | 5,255.15 mi (8,457.35 km) |
| Houghton le Spring to Caldwell (Idaho) | 4,645.69 mi (7,476.51 km) |
| Houghton le Spring to Caledonia (Wisconsin) | 3,759.58 mi (6,050.46 km) |
| Houghton le Spring to Calera (Alabama) | 4,207.12 mi (6,770.70 km) |
| Houghton le Spring to Calexico (California) | 5,241.95 mi (8,436.10 km) |
| Houghton le Spring to Calhoun (Georgia) | 4,067.74 mi (6,546.40 km) |
| Houghton le Spring to California (Maryland) | 3,553.66 mi (5,719.06 km) |
| Houghton le Spring to California City (California) | 5,171.37 mi (8,322.51 km) |
| Houghton le Spring to Callaway (Florida) | 4,318.40 mi (6,949.79 km) |
| Houghton le Spring to Calumet City (Illinois) | 3,806.03 mi (6,125.22 km) |
| Houghton le Spring to Calverton (Maryland) | 3,534.30 mi (5,687.90 km) |
| Houghton le Spring to Camano (Washington) | 4,539.10 mi (7,304.98 km) |
| Houghton le Spring to Camarillo (California) | 5,261.07 mi (8,466.87 km) |
