| Sumter to Devnya | 5,437.91 mi (8,751.47 km) |
| Sumter to Dimitrovgrad | 5,404.25 mi (8,697.29 km) |
| Sumter to Dobrich | 5,434.30 mi (8,745.67 km) |
| Sumter to Dospat | 5,359.74 mi (8,625.67 km) |
| Sumter to Dupnitsa | 5,291.31 mi (8,515.53 km) |
| Sumter to Elhovo | 5,439.77 mi (8,754.47 km) |
| Sumter to Etropole | 5,306.37 mi (8,539.78 km) |
| Sumter to Gabrovo | 5,360.55 mi (8,626.97 km) |
| Sumter to Gorna Oryahovitsa | 5,365.06 mi (8,634.22 km) |
| Sumter to Gotse Delchev | 5,344.57 mi (8,601.26 km) |
| Sumter to Harmanli | 5,421.47 mi (8,725.01 km) |
| Sumter to Haskovo | 5,407.53 mi (8,702.58 km) |
| Sumter to Ihtiman | 5,314.11 mi (8,552.23 km) |
| Sumter to Isperih | 5,387.83 mi (8,670.88 km) |
| Sumter to Kardzhali | 5,410.47 mi (8,707.32 km) |
