| Hartsville to Popovo | 5,484.57 mi (8,826.56 km) |
| Hartsville to Provadia | 5,537.61 mi (8,911.92 km) |
| Hartsville to Radnevo | 5,520.42 mi (8,884.25 km) |
| Hartsville to Radomir | 5,392.55 mi (8,678.47 km) |
| Hartsville to Rakitovo | 5,462.19 mi (8,790.54 km) |
| Hartsville to Rakovski | 5,483.31 mi (8,824.53 km) |
| Hartsville to Razgrad | 5,487.04 mi (8,830.53 km) |
| Hartsville to Razlog | 5,442.15 mi (8,758.29 km) |
| Hartsville to Ruse | 5,452.66 mi (8,775.21 km) |
| Hartsville to Samokov | 5,425.77 mi (8,731.94 km) |
| Hartsville to Sandanski | 5,448.60 mi (8,768.67 km) |
| Hartsville to Sevlievo | 5,456.19 mi (8,780.89 km) |
| Hartsville to Shumen | 5,514.15 mi (8,874.17 km) |
| Hartsville to Silistra | 5,488.46 mi (8,832.82 km) |
| Hartsville to Sliven | 5,518.52 mi (8,881.20 km) |
