| Johnston to Commerce (California) | 1,428.80 mi (2,299.42 km) |
| Johnston to Commerce City (Colorado) | 594.86 mi (957.34 km) |
| Johnston to Compton (California) | 1,436.05 mi (2,311.10 km) |
| Johnston to Comstock Park (Michigan) | 421.04 mi (677.59 km) |
| Johnston to Concord (California) | 1,515.21 mi (2,438.49 km) |
| Johnston to Concord (Missouri) | 282.61 mi (454.82 km) |
| Johnston to Concord (New Hampshire) | 1,131.42 mi (1,820.84 km) |
| Johnston to Concord (North Carolina) | 828.96 mi (1,334.08 km) |
| Johnston to Conneaut (Ohio) | 677.01 mi (1,089.54 km) |
| Johnston to Connersville (Indiana) | 470.91 mi (757.86 km) |
| Johnston to Conroe (Texas) | 791.47 mi (1,273.76 km) |
| Johnston to Converse (Texas) | 879.85 mi (1,415.99 km) |
| Johnston to Conway (Arkansas) | 462.10 mi (743.68 km) |
| Johnston to Conway (Florida) | 1,147.08 mi (1,846.05 km) |
| Johnston to Conway (South Carolina) | 965.94 mi (1,554.53 km) |
