| Southern Pines to Popovo | 5,277.50 mi (8,493.32 km) |
| Southern Pines to Provadia | 5,332.98 mi (8,582.61 km) |
| Southern Pines to Radnevo | 5,307.78 mi (8,542.05 km) |
| Southern Pines to Radomir | 5,173.35 mi (8,325.71 km) |
| Southern Pines to Rakitovo | 5,243.29 mi (8,438.25 km) |
| Southern Pines to Rakovski | 5,268.08 mi (8,478.15 km) |
| Southern Pines to Razgrad | 5,281.56 mi (8,499.86 km) |
| Southern Pines to Razlog | 5,221.21 mi (8,402.72 km) |
| Southern Pines to Ruse | 5,247.04 mi (8,444.30 km) |
| Southern Pines to Samokov | 5,207.13 mi (8,380.07 km) |
| Southern Pines to Sandanski | 5,225.76 mi (8,410.05 km) |
| Southern Pines to Sevlievo | 5,244.71 mi (8,440.54 km) |
| Southern Pines to Shumen | 5,308.64 mi (8,543.43 km) |
| Southern Pines to Silistra | 5,287.64 mi (8,509.63 km) |
| Southern Pines to Sliven | 5,308.68 mi (8,543.50 km) |
