| Blackburn to Carson (California) | 5,277.38 mi (8,493.12 km) |
| Blackburn to Carson City (Nevada) | 5,016.05 mi (8,072.55 km) |
| Blackburn to Carteret (New Jersey) | 3,336.82 mi (5,370.09 km) |
| Blackburn to Cartersville (Georgia) | 4,061.60 mi (6,536.52 km) |
| Blackburn to Carthage (Missouri) | 4,273.03 mi (6,876.78 km) |
| Blackburn to Cary (Illinois) | 3,797.35 mi (6,111.25 km) |
| Blackburn to Cary (North Carolina) | 3,745.49 mi (6,027.78 km) |
| Blackburn to Casa de Oro-Mount Helix (California) | 5,298.38 mi (8,526.92 km) |
| Blackburn to Casa Grande (Arizona) | 5,118.89 mi (8,238.06 km) |
| Blackburn to Casas Adobes (Arizona) | 5,125.20 mi (8,248.22 km) |
| Blackburn to Cascades (Virginia) | 3,532.50 mi (5,685.01 km) |
| Blackburn to Casper (Wyoming) | 4,394.31 mi (7,071.96 km) |
| Blackburn to Casselberry (Florida) | 4,203.73 mi (6,765.24 km) |
| Blackburn to Castaic (California) | 5,251.88 mi (8,452.09 km) |
| Blackburn to Castle Pines (Colorado) | 4,526.04 mi (7,283.95 km) |
