| Johnston to Camarillo (California) | 1,465.55 mi (2,358.57 km) |
| Johnston to Camas (Washington) | 1,452.34 mi (2,337.31 km) |
| Johnston to Cambridge (Maryland) | 955.30 mi (1,537.40 km) |
| Johnston to Cambridge (Massachusetts) | 1,157.61 mi (1,863.00 km) |
| Johnston to Camden (Arkansas) | 563.34 mi (906.60 km) |
| Johnston to Camden (New Jersey) | 979.06 mi (1,575.64 km) |
| Johnston to Cameron Park (California) | 1,448.01 mi (2,330.35 km) |
| Johnston to Camp Pendleton South (California) | 1,417.47 mi (2,281.20 km) |
| Johnston to Camp Springs (Maryland) | 906.71 mi (1,459.21 km) |
| Johnston to Camp Verde (Arizona) | 1,098.49 mi (1,767.85 km) |
| Johnston to Campbell (California) | 1,528.71 mi (2,460.22 km) |
| Johnston to Campbellsville (Kentucky) | 537.49 mi (865.00 km) |
| Johnston to Campton Hills (Illinois) | 273.79 mi (440.63 km) |
| Johnston to Canby (Oregon) | 1,464.81 mi (2,357.38 km) |
| Johnston to Candelaria (Puerto Rico) | 2,281.71 mi (3,672.07 km) |
