| North Charleston to Popovo | 5,415.10 mi (8,714.76 km) |
| North Charleston to Provadia | 5,471.15 mi (8,804.97 km) |
| North Charleston to Radnevo | 5,443.84 mi (8,761.01 km) |
| North Charleston to Radomir | 5,307.73 mi (8,541.97 km) |
| North Charleston to Rakitovo | 5,377.66 mi (8,654.50 km) |
| North Charleston to Rakovski | 5,403.46 mi (8,696.02 km) |
| North Charleston to Razgrad | 5,419.57 mi (8,721.96 km) |
| North Charleston to Razlog | 5,355.02 mi (8,618.07 km) |
| North Charleston to Ruse | 5,385.05 mi (8,666.41 km) |
| North Charleston to Samokov | 5,341.62 mi (8,596.51 km) |
| North Charleston to Sandanski | 5,359.01 mi (8,624.49 km) |
| North Charleston to Sevlievo | 5,381.16 mi (8,660.13 km) |
| North Charleston to Shumen | 5,446.61 mi (8,765.47 km) |
| North Charleston to Silistra | 5,426.84 mi (8,733.66 km) |
| North Charleston to Sliven | 5,445.50 mi (8,763.68 km) |
