| Karlovo to Southern Pines (North Carolina) | 5,247.30 mi (8,444.72 km) |
| Karlovo to Southfield (Michigan) | 5,056.92 mi (8,138.33 km) |
| Karlovo to Southgate (Michigan) | 5,067.71 mi (8,155.68 km) |
| Karlovo to Southlake (Texas) | 6,052.82 mi (9,741.07 km) |
| Karlovo to Spanaway (Washington) | 5,920.50 mi (9,528.12 km) |
| Karlovo to Spanish Fork (Utah) | 6,104.70 mi (9,824.56 km) |
| Karlovo to Spanish Lake (Missouri) | 5,494.15 mi (8,841.98 km) |
| Karlovo to Spanish Springs (Nevada) | 6,331.54 mi (10,189.63 km) |
| Karlovo to Sparks (Nevada) | 6,337.80 mi (10,199.70 km) |
| Karlovo to Spartanburg (South Carolina) | 5,362.89 mi (8,630.74 km) |
| Karlovo to Spearfish (South Dakota) | 5,633.50 mi (9,066.25 km) |
| Karlovo to Speedway (Indiana) | 5,297.54 mi (8,525.56 km) |
| Karlovo to Spencer (Iowa) | 5,440.43 mi (8,755.52 km) |
| Karlovo to Spokane (Washington) | 5,785.40 mi (9,310.69 km) |
| Karlovo to Spokane Valley (Washington) | 5,781.48 mi (9,304.39 km) |
