| Columbia to Popovo | 5,394.26 mi (8,681.23 km) |
| Columbia to Provadia | 5,449.72 mi (8,770.48 km) |
| Columbia to Radnevo | 5,424.57 mi (8,730.00 km) |
| Columbia to Radomir | 5,290.13 mi (8,513.64 km) |
| Columbia to Rakitovo | 5,360.06 mi (8,626.18 km) |
| Columbia to Rakovski | 5,384.86 mi (8,666.10 km) |
| Columbia to Razgrad | 5,398.31 mi (8,687.74 km) |
| Columbia to Razlog | 5,337.97 mi (8,590.63 km) |
| Columbia to Ruse | 5,363.79 mi (8,632.18 km) |
| Columbia to Samokov | 5,323.91 mi (8,568.00 km) |
| Columbia to Sandanski | 5,342.50 mi (8,597.93 km) |
| Columbia to Sevlievo | 5,361.49 mi (8,628.48 km) |
| Columbia to Shumen | 5,425.39 mi (8,731.32 km) |
| Columbia to Silistra | 5,404.33 mi (8,697.43 km) |
| Columbia to Sliven | 5,425.46 mi (8,731.43 km) |
