| Knowle to Cloverly (Maryland) | 3,570.50 mi (5,746.16 km) |
| Knowle to Clovis (California) | 5,235.04 mi (8,424.98 km) |
| Knowle to Clovis (New Mexico) | 4,811.46 mi (7,743.30 km) |
| Knowle to Clute (Texas) | 4,801.85 mi (7,727.84 km) |
| Knowle to Coachella (California) | 5,301.49 mi (8,531.92 km) |
| Knowle to Coalinga (California) | 5,294.22 mi (8,520.22 km) |
| Knowle to Coamo (Puerto Rico) | 4,171.30 mi (6,713.06 km) |
| Knowle to Coatesville (Pennsylvania) | 3,483.27 mi (5,605.78 km) |
| Knowle to Cockeysville (Maryland) | 3,538.60 mi (5,694.83 km) |
| Knowle to Cocoa (Florida) | 4,242.39 mi (6,827.46 km) |
| Knowle to Cocoa Beach (Florida) | 4,239.06 mi (6,822.11 km) |
| Knowle to Coconut Creek (Florida) | 4,324.86 mi (6,960.19 km) |
| Knowle to Coeur d'Alene (Idaho) | 4,537.46 mi (7,302.33 km) |
| Knowle to Cohoes (New York) | 3,276.65 mi (5,273.25 km) |
| Knowle to Cold Springs (Nevada) | 5,079.74 mi (8,175.05 km) |
