| Sofia to Clermont (Florida) | 5,597.23 mi (9,007.87 km) |
| Sofia to Cleveland (Mississippi) | 5,711.96 mi (9,192.52 km) |
| Sofia to Cleveland (Ohio) | 4,985.00 mi (8,022.59 km) |
| Sofia to Cleveland (Tennessee) | 5,408.66 mi (8,704.40 km) |
| Sofia to Cleveland Heights (Ohio) | 4,978.88 mi (8,012.74 km) |
| Sofia to Cliffside Park (New Jersey) | 4,707.40 mi (7,575.83 km) |
| Sofia to Clifton (Colorado) | 6,031.14 mi (9,706.19 km) |
| Sofia to Clifton (New Jersey) | 4,712.62 mi (7,584.22 km) |
| Sofia to Clinton (Iowa) | 5,285.56 mi (8,506.29 km) |
| Sofia to Clinton (Maryland) | 4,917.95 mi (7,914.68 km) |
| Sofia to Clinton (Mississippi) | 5,767.42 mi (9,281.77 km) |
| Sofia to Clinton (Utah) | 6,012.05 mi (9,675.46 km) |
| Sofia to Clive (Iowa) | 5,421.90 mi (8,725.71 km) |
| Sofia to Cloquet (Minnesota) | 5,118.52 mi (8,237.46 km) |
| Sofia to Cloverleaf (Texas) | 6,089.53 mi (9,800.15 km) |
