| Knowle to Chantilly (Virginia) | 3,598.50 mi (5,791.22 km) |
| Knowle to Chaparral (New Mexico) | 5,056.72 mi (8,138.01 km) |
| Knowle to Chapel Hill (North Carolina) | 3,801.01 mi (6,117.14 km) |
| Knowle to Charleston (Illinois) | 3,993.46 mi (6,426.84 km) |
| Knowle to Charleston (South Carolina) | 3,988.89 mi (6,419.50 km) |
| Knowle to Charleston (West Virginia) | 3,791.19 mi (6,101.34 km) |
| Knowle to Charlotte (North Carolina) | 3,908.08 mi (6,289.45 km) |
| Knowle to Charlottesville (Virginia) | 3,679.56 mi (5,921.68 km) |
| Knowle to Chaska (Minnesota) | 3,940.56 mi (6,341.72 km) |
| Knowle to Chatham (Illinois) | 4,042.26 mi (6,505.39 km) |
| Knowle to Chattanooga (Tennessee) | 4,092.73 mi (6,586.61 km) |
| Knowle to Cheat Lake (West Virginia) | 3,659.37 mi (5,889.19 km) |
| Knowle to Chelsea (Alabama) | 4,233.88 mi (6,813.76 km) |
| Knowle to Chelsea (Massachusetts) | 3,185.06 mi (5,125.86 km) |
| Knowle to Cheney (Washington) | 4,571.33 mi (7,356.84 km) |
