| Sumter to Popovo | 5,378.24 mi (8,655.44 km) |
| Sumter to Provadia | 5,433.87 mi (8,744.97 km) |
| Sumter to Radnevo | 5,408.10 mi (8,703.50 km) |
| Sumter to Radomir | 5,273.19 mi (8,486.38 km) |
| Sumter to Rakitovo | 5,343.12 mi (8,598.92 km) |
| Sumter to Rakovski | 5,368.20 mi (8,639.29 km) |
| Sumter to Razgrad | 5,382.41 mi (8,662.15 km) |
| Sumter to Razlog | 5,320.88 mi (8,563.13 km) |
| Sumter to Ruse | 5,347.88 mi (8,606.59 km) |
| Sumter to Samokov | 5,307.00 mi (8,540.80 km) |
| Sumter to Sandanski | 5,325.27 mi (8,570.19 km) |
| Sumter to Sevlievo | 5,345.13 mi (8,602.16 km) |
| Sumter to Shumen | 5,409.47 mi (8,705.71 km) |
| Sumter to Silistra | 5,388.79 mi (8,672.41 km) |
| Sumter to Sliven | 5,409.21 mi (8,705.28 km) |
