| Karlovo to Smyrna (Delaware) | 4,903.40 mi (7,891.26 km) |
| Karlovo to Smyrna (Georgia) | 5,520.60 mi (8,884.55 km) |
| Karlovo to Smyrna (Tennessee) | 5,496.66 mi (8,846.02 km) |
| Karlovo to Snellville (Georgia) | 5,500.15 mi (8,851.64 km) |
| Karlovo to Snoqualmie (Washington) | 5,882.24 mi (9,466.55 km) |
| Karlovo to Snyder (Texas) | 6,199.44 mi (9,977.04 km) |
| Karlovo to Socastee (South Carolina) | 5,301.35 mi (8,531.70 km) |
| Karlovo to Socorro (Texas) | 6,440.46 mi (10,364.91 km) |
| Karlovo to Soddy-Daisy (Tennessee) | 5,478.57 mi (8,816.91 km) |
| Karlovo to Solana Beach (California) | 6,685.39 mi (10,759.09 km) |
| Karlovo to Soledad (California) | 6,571.27 mi (10,575.44 km) |
| Karlovo to Solon (Ohio) | 5,039.26 mi (8,109.91 km) |
| Karlovo to Somers Point (New Jersey) | 4,861.25 mi (7,823.43 km) |
| Karlovo to Somerset (Kentucky) | 5,367.11 mi (8,637.53 km) |
| Karlovo to Somerset (New Jersey) | 4,804.66 mi (7,732.35 km) |
