| Sofia to Carlsbad (New Mexico) | 6,277.55 mi (10,102.75 km) |
| Sofia to Carmel (Indiana) | 5,227.11 mi (8,412.22 km) |
| Sofia to Carmichael (California) | 6,396.22 mi (10,293.72 km) |
| Sofia to Carney (Maryland) | 4,873.13 mi (7,842.55 km) |
| Sofia to Carnot-Moon (Pennsylvania) | 4,971.78 mi (8,001.30 km) |
| Sofia to Carol Stream (Illinois) | 5,205.89 mi (8,378.07 km) |
| Sofia to Carolina (Puerto Rico) | 5,330.02 mi (8,577.85 km) |
| Sofia to Carolina Forest (South Carolina) | 5,228.90 mi (8,415.10 km) |
| Sofia to Carpentersville (Illinois) | 5,201.65 mi (8,371.25 km) |
| Sofia to Carpinteria (California) | 6,615.71 mi (10,646.96 km) |
| Sofia to Carrboro (North Carolina) | 5,136.39 mi (8,266.22 km) |
| Sofia to Carroll (Iowa) | 5,434.85 mi (8,746.54 km) |
| Sofia to Carrollton (Georgia) | 5,495.03 mi (8,843.40 km) |
| Sofia to Carrollton (Texas) | 5,985.13 mi (9,632.14 km) |
| Sofia to Carrollwood (Florida) | 5,654.72 mi (9,100.40 km) |
