| Blackburn to Cloverly (Maryland) | 3,514.41 mi (5,655.90 km) |
| Blackburn to Clovis (California) | 5,148.37 mi (8,285.50 km) |
| Blackburn to Clovis (New Mexico) | 4,737.56 mi (7,624.37 km) |
| Blackburn to Clute (Texas) | 4,739.37 mi (7,627.28 km) |
| Blackburn to Coachella (California) | 5,218.63 mi (8,398.58 km) |
| Blackburn to Coalinga (California) | 5,207.50 mi (8,380.67 km) |
| Blackburn to Coamo (Puerto Rico) | 4,156.13 mi (6,688.64 km) |
| Blackburn to Coatesville (Pennsylvania) | 3,427.08 mi (5,515.36 km) |
| Blackburn to Cockeysville (Maryland) | 3,482.36 mi (5,604.32 km) |
| Blackburn to Cocoa (Florida) | 4,195.87 mi (6,752.60 km) |
| Blackburn to Cocoa Beach (Florida) | 4,192.76 mi (6,747.60 km) |
| Blackburn to Coconut Creek (Florida) | 4,281.47 mi (6,890.37 km) |
| Blackburn to Coeur d'Alene (Idaho) | 4,447.09 mi (7,156.90 km) |
| Blackburn to Cohoes (New York) | 3,218.36 mi (5,179.45 km) |
| Blackburn to Cold Springs (Nevada) | 4,991.58 mi (8,033.17 km) |
