| Blackburn to Caguas (Puerto Rico) | 4,134.57 mi (6,653.95 km) |
| Blackburn to Cahokia (Illinois) | 4,047.50 mi (6,513.83 km) |
| Blackburn to Calabasas (California) | 5,272.97 mi (8,486.02 km) |
| Blackburn to Caldwell (Idaho) | 4,669.59 mi (7,514.97 km) |
| Blackburn to Caledonia (Wisconsin) | 3,755.65 mi (6,044.13 km) |
| Blackburn to Calera (Alabama) | 4,190.28 mi (6,743.60 km) |
| Blackburn to Calexico (California) | 5,255.19 mi (8,457.41 km) |
| Blackburn to Calhoun (Georgia) | 4,050.57 mi (6,518.76 km) |
| Blackburn to California (Maryland) | 3,532.57 mi (5,685.11 km) |
| Blackburn to California City (California) | 5,189.18 mi (8,351.18 km) |
| Blackburn to Callaway (Florida) | 4,297.01 mi (6,915.38 km) |
| Blackburn to Calumet City (Illinois) | 3,800.25 mi (6,115.90 km) |
| Blackburn to Calverton (Maryland) | 3,514.70 mi (5,656.36 km) |
| Blackburn to Camano (Washington) | 4,572.07 mi (7,358.04 km) |
| Blackburn to Camarillo (California) | 5,279.33 mi (8,496.26 km) |
