| Johnston to Clarksdale (Mississippi) | 545.69 mi (878.21 km) |
| Johnston to Clarkston (Georgia) | 750.57 mi (1,207.93 km) |
| Johnston to Clarksville (Indiana) | 480.84 mi (773.83 km) |
| Johnston to Clarksville (Tennessee) | 491.89 mi (791.62 km) |
| Johnston to Clawson (Michigan) | 544.69 mi (876.60 km) |
| Johnston to Clay (Alabama) | 675.09 mi (1,086.46 km) |
| Johnston to Clayton (California) | 1,512.22 mi (2,433.69 km) |
| Johnston to Clayton (Missouri) | 276.36 mi (444.77 km) |
| Johnston to Clayton (North Carolina) | 921.45 mi (1,482.93 km) |
| Johnston to Clayton (Ohio) | 507.07 mi (816.05 km) |
| Johnston to Clearfield (Utah) | 947.60 mi (1,525.01 km) |
| Johnston to Clearlake (California) | 1,527.23 mi (2,457.84 km) |
| Johnston to Clearwater (Florida) | 1,130.96 mi (1,820.10 km) |
| Johnston to Cleburne (Texas) | 676.13 mi (1,088.13 km) |
| Johnston to Clemmons (North Carolina) | 815.85 mi (1,312.99 km) |
