| Knowle to Cicero (Illinois) | 3,865.57 mi (6,221.03 km) |
| Knowle to Cimarron Hills (Colorado) | 4,630.80 mi (7,452.55 km) |
| Knowle to Cincinnati (Ohio) | 3,867.38 mi (6,223.95 km) |
| Knowle to Cinco Ranch (Texas) | 4,778.64 mi (7,690.47 km) |
| Knowle to Circleville (Ohio) | 3,783.89 mi (6,089.58 km) |
| Knowle to Citrus (California) | 5,333.97 mi (8,584.20 km) |
| Knowle to Citrus Heights (California) | 5,176.05 mi (8,330.04 km) |
| Knowle to Citrus Park (Florida) | 4,332.38 mi (6,972.29 km) |
| Knowle to Claiborne (Louisiana) | 4,494.27 mi (7,232.84 km) |
| Knowle to Claremont (California) | 5,327.82 mi (8,574.30 km) |
| Knowle to Claremont (New Hampshire) | 3,196.29 mi (5,143.93 km) |
| Knowle to Claremore (Oklahoma) | 4,432.95 mi (7,134.15 km) |
| Knowle to Clarksburg (Maryland) | 3,575.86 mi (5,754.79 km) |
| Knowle to Clarksburg (West Virginia) | 3,695.47 mi (5,947.28 km) |
| Knowle to Clarksdale (Mississippi) | 4,346.49 mi (6,995.01 km) |
