| Knowle to Castle Rock (Colorado) | 4,608.91 mi (7,417.32 km) |
| Knowle to Castro Valley (California) | 5,256.08 mi (8,458.85 km) |
| Knowle to Catalina Foothills (Arizona) | 5,201.28 mi (8,370.65 km) |
| Knowle to Cataño (Puerto Rico) | 4,142.87 mi (6,667.31 km) |
| Knowle to Cathedral City (California) | 5,303.74 mi (8,535.54 km) |
| Knowle to Catonsville (Maryland) | 3,552.94 mi (5,717.90 km) |
| Knowle to Cave Spring (Virginia) | 3,778.85 mi (6,081.46 km) |
| Knowle to Cayce (South Carolina) | 3,977.76 mi (6,401.58 km) |
| Knowle to Cayey (Puerto Rico) | 4,160.88 mi (6,696.28 km) |
| Knowle to Cedar City (Utah) | 4,977.72 mi (8,010.86 km) |
| Knowle to Cedar Falls (Iowa) | 4,008.39 mi (6,450.88 km) |
| Knowle to Cedar Hill (Texas) | 4,676.49 mi (7,526.08 km) |
| Knowle to Cedar Lake (Indiana) | 3,875.70 mi (6,237.34 km) |
| Knowle to Cedar Mill (Oregon) | 4,825.09 mi (7,765.23 km) |
| Knowle to Cedar Park (Texas) | 4,818.00 mi (7,753.83 km) |
