| Sofia to Carson (California) | 6,617.63 mi (10,650.04 km) |
| Sofia to Carson City (Nevada) | 6,327.08 mi (10,182.45 km) |
| Sofia to Carteret (New Jersey) | 4,727.45 mi (7,608.10 km) |
| Sofia to Cartersville (Georgia) | 5,455.17 mi (8,779.25 km) |
| Sofia to Carthage (Missouri) | 5,671.59 mi (9,127.54 km) |
| Sofia to Cary (Illinois) | 5,195.79 mi (8,361.81 km) |
| Sofia to Cary (North Carolina) | 5,131.81 mi (8,258.85 km) |
| Sofia to Casa de Oro-Mount Helix (California) | 6,648.65 mi (10,699.97 km) |
| Sofia to Casa Grande (Arizona) | 6,490.03 mi (10,444.69 km) |
| Sofia to Casas Adobes (Arizona) | 6,500.38 mi (10,461.35 km) |
| Sofia to Cascades (Virginia) | 4,924.46 mi (7,925.16 km) |
| Sofia to Casper (Wyoming) | 5,753.03 mi (9,258.61 km) |
| Sofia to Casselberry (Florida) | 5,573.58 mi (8,969.80 km) |
| Sofia to Castaic (California) | 6,587.83 mi (10,602.10 km) |
| Sofia to Castle Pines (Colorado) | 5,900.80 mi (9,496.42 km) |
