| Knowle to Caguas (Puerto Rico) | 4,149.46 mi (6,677.91 km) |
| Knowle to Cahokia (Illinois) | 4,114.60 mi (6,621.82 km) |
| Knowle to Calabasas (California) | 5,357.70 mi (8,622.38 km) |
| Knowle to Caldwell (Idaho) | 4,757.94 mi (7,657.16 km) |
| Knowle to Caledonia (Wisconsin) | 3,825.45 mi (6,156.47 km) |
| Knowle to Calera (Alabama) | 4,248.48 mi (6,837.27 km) |
| Knowle to Calexico (California) | 5,337.04 mi (8,589.13 km) |
| Knowle to Calhoun (Georgia) | 4,108.54 mi (6,612.06 km) |
| Knowle to California (Maryland) | 3,587.07 mi (5,772.82 km) |
| Knowle to California City (California) | 5,273.93 mi (8,487.57 km) |
| Knowle to Callaway (Florida) | 4,350.74 mi (7,001.84 km) |
| Knowle to Calumet City (Illinois) | 3,868.49 mi (6,225.74 km) |
| Knowle to Calverton (Maryland) | 3,570.67 mi (5,746.43 km) |
| Knowle to Camano (Washington) | 4,664.85 mi (7,507.36 km) |
| Knowle to Camarillo (California) | 5,364.34 mi (8,633.06 km) |
