| Howard to Clemson (South Carolina) | 738.22 mi (1,188.04 km) |
| Howard to Clermont (Florida) | 1,162.22 mi (1,870.42 km) |
| Howard to Cleveland (Mississippi) | 761.12 mi (1,224.90 km) |
| Howard to Cleveland (Ohio) | 387.90 mi (624.26 km) |
| Howard to Cleveland (Tennessee) | 670.66 mi (1,079.32 km) |
| Howard to Cleveland Heights (Ohio) | 391.45 mi (629.98 km) |
| Howard to Cliffside Park (New Jersey) | 760.42 mi (1,223.78 km) |
| Howard to Clifton (Colorado) | 1,111.68 mi (1,789.07 km) |
| Howard to Clifton (New Jersey) | 751.19 mi (1,208.92 km) |
| Howard to Clinton (Iowa) | 217.24 mi (349.62 km) |
| Howard to Clinton (Maryland) | 702.66 mi (1,130.82 km) |
| Howard to Clinton (Mississippi) | 852.68 mi (1,372.26 km) |
| Howard to Clinton (Utah) | 1,232.47 mi (1,983.47 km) |
| Howard to Clive (Iowa) | 352.80 mi (567.77 km) |
| Howard to Cloquet (Minnesota) | 259.29 mi (417.28 km) |
