| Johnston to Cordele (Georgia) | 867.90 mi (1,396.75 km) |
| Johnston to Corinth (Mississippi) | 544.56 mi (876.39 km) |
| Johnston to Corinth (Texas) | 618.31 mi (995.07 km) |
| Johnston to Cornelius (North Carolina) | 814.59 mi (1,310.96 km) |
| Johnston to Cornelius (Oregon) | 1,482.35 mi (2,385.61 km) |
| Johnston to Corning (New York) | 856.11 mi (1,377.78 km) |
| Johnston to Corona (California) | 1,404.01 mi (2,259.54 km) |
| Johnston to Coronado (California) | 1,426.77 mi (2,296.16 km) |
| Johnston to Corpus Christi (Texas) | 986.72 mi (1,587.98 km) |
| Johnston to Corsicana (Texas) | 680.87 mi (1,095.75 km) |
| Johnston to Cortland (New York) | 899.38 mi (1,447.42 km) |
| Johnston to Corvallis (Oregon) | 1,495.16 mi (2,406.23 km) |
| Johnston to Coshocton (Ohio) | 626.77 mi (1,008.68 km) |
| Johnston to Costa Mesa (California) | 1,428.08 mi (2,298.27 km) |
| Johnston to Coto de Caza (California) | 1,414.23 mi (2,275.98 km) |
