| Sofia to Chantilly (Virginia) | 4,933.97 mi (7,940.46 km) |
| Sofia to Chaparral (New Mexico) | 6,370.46 mi (10,252.27 km) |
| Sofia to Chapel Hill (North Carolina) | 5,134.31 mi (8,262.87 km) |
| Sofia to Charleston (Illinois) | 5,327.05 mi (8,573.05 km) |
| Sofia to Charleston (South Carolina) | 5,318.12 mi (8,558.68 km) |
| Sofia to Charleston (West Virginia) | 5,128.07 mi (8,252.83 km) |
| Sofia to Charlotte (North Carolina) | 5,242.21 mi (8,436.53 km) |
| Sofia to Charlottesville (Virginia) | 5,014.91 mi (8,070.71 km) |
| Sofia to Chaska (Minnesota) | 5,251.55 mi (8,451.55 km) |
| Sofia to Chatham (Illinois) | 5,373.90 mi (8,648.46 km) |
| Sofia to Chattanooga (Tennessee) | 5,429.46 mi (8,737.87 km) |
| Sofia to Cheat Lake (West Virginia) | 4,996.27 mi (8,040.71 km) |
| Sofia to Chelsea (Alabama) | 5,570.37 mi (8,964.64 km) |
| Sofia to Chelsea (Massachusetts) | 4,520.08 mi (7,274.36 km) |
| Sofia to Cheney (Washington) | 5,764.19 mi (9,276.57 km) |
