| Johnston to Crawfordsville (Indiana) | 374.27 mi (602.33 km) |
| Johnston to Crest Hill (Illinois) | 289.83 mi (466.44 km) |
| Johnston to Crestview (Florida) | 853.81 mi (1,374.07 km) |
| Johnston to Crestwood (Illinois) | 308.79 mi (496.95 km) |
| Johnston to Crestwood (Missouri) | 279.46 mi (449.75 km) |
| Johnston to Creve Coeur (Missouri) | 271.60 mi (437.09 km) |
| Johnston to Crofton (Maryland) | 914.64 mi (1,471.98 km) |
| Johnston to Crossville (Tennessee) | 612.79 mi (986.20 km) |
| Johnston to Crowley (Louisiana) | 796.29 mi (1,281.50 km) |
| Johnston to Crowley (Texas) | 660.53 mi (1,063.03 km) |
| Johnston to Crown Point (Indiana) | 330.24 mi (531.47 km) |
| Johnston to Crystal (Minnesota) | 231.95 mi (373.29 km) |
| Johnston to Crystal Lake (Illinois) | 279.31 mi (449.51 km) |
| Johnston to Cudahy (California) | 1,431.47 mi (2,303.72 km) |
| Johnston to Cudahy (Wisconsin) | 311.58 mi (501.45 km) |
