| Johnston to Carrollwood (Florida) | 1,133.96 mi (1,824.93 km) |
| Johnston to Carson (California) | 1,439.35 mi (2,316.42 km) |
| Johnston to Carson City (Nevada) | 1,374.78 mi (2,212.49 km) |
| Johnston to Carteret (New Jersey) | 1,015.14 mi (1,633.71 km) |
| Johnston to Cartersville (Georgia) | 711.17 mi (1,144.52 km) |
| Johnston to Carthage (Missouri) | 315.35 mi (507.51 km) |
| Johnston to Cary (Illinois) | 283.53 mi (456.30 km) |
| Johnston to Cary (North Carolina) | 899.33 mi (1,447.33 km) |
| Johnston to Casa de Oro-Mount Helix (California) | 1,413.69 mi (2,275.12 km) |
| Johnston to Casa Grande (Arizona) | 1,158.92 mi (1,865.09 km) |
| Johnston to Casas Adobes (Arizona) | 1,148.42 mi (1,848.20 km) |
| Johnston to Cascades (Virginia) | 877.72 mi (1,412.55 km) |
| Johnston to Casper (Wyoming) | 648.38 mi (1,043.47 km) |
| Johnston to Casselberry (Florida) | 1,137.97 mi (1,831.38 km) |
| Johnston to Castaic (California) | 1,436.99 mi (2,312.62 km) |
