| Sofia to Caguas (Puerto Rico) | 5,340.85 mi (8,595.27 km) |
| Sofia to Cahokia (Illinois) | 5,447.33 mi (8,766.62 km) |
| Sofia to Calabasas (California) | 6,609.99 mi (10,637.75 km) |
| Sofia to Caldwell (Idaho) | 5,977.80 mi (9,620.34 km) |
| Sofia to Caledonia (Wisconsin) | 5,153.77 mi (8,294.19 km) |
| Sofia to Calera (Alabama) | 5,584.93 mi (8,988.07 km) |
| Sofia to Calexico (California) | 6,612.37 mi (10,641.59 km) |
| Sofia to Calhoun (Georgia) | 5,444.90 mi (8,762.73 km) |
| Sofia to California (Maryland) | 4,921.13 mi (7,919.80 km) |
| Sofia to California City (California) | 6,526.58 mi (10,503.51 km) |
| Sofia to Callaway (Florida) | 5,683.44 mi (9,146.61 km) |
| Sofia to Calumet City (Illinois) | 5,199.56 mi (8,367.89 km) |
| Sofia to Calverton (Maryland) | 4,905.99 mi (7,895.42 km) |
| Sofia to Camano (Washington) | 5,821.09 mi (9,368.14 km) |
| Sofia to Camarillo (California) | 6,614.12 mi (10,644.40 km) |
