| Johnston to Clemson (South Carolina) | 764.11 mi (1,229.71 km) |
| Johnston to Clermont (Florida) | 1,131.90 mi (1,821.62 km) |
| Johnston to Cleveland (Mississippi) | 572.86 mi (921.92 km) |
| Johnston to Cleveland (Ohio) | 622.06 mi (1,001.10 km) |
| Johnston to Cleveland (Tennessee) | 656.46 mi (1,056.46 km) |
| Johnston to Cleveland Heights (Ohio) | 627.86 mi (1,010.44 km) |
| Johnston to Cliffside Park (New Jersey) | 1,024.61 mi (1,648.95 km) |
| Johnston to Clifton (Colorado) | 795.29 mi (1,279.89 km) |
| Johnston to Clifton (New Jersey) | 1,015.39 mi (1,634.12 km) |
| Johnston to Clinton (Iowa) | 179.75 mi (289.28 km) |
| Johnston to Clinton (Maryland) | 908.60 mi (1,462.25 km) |
| Johnston to Clinton (Mississippi) | 671.42 mi (1,080.54 km) |
| Johnston to Clinton (Utah) | 949.38 mi (1,527.88 km) |
| Johnston to Clive (Iowa) | 6.53 mi (10.51 km) |
| Johnston to Cloquet (Minnesota) | 352.91 mi (567.95 km) |
