| Rock Hill to Popovo | 5,355.22 mi (8,618.39 km) |
| Rock Hill to Provadia | 5,410.34 mi (8,707.09 km) |
| Rock Hill to Radnevo | 5,386.39 mi (8,668.55 km) |
| Rock Hill to Radomir | 5,252.91 mi (8,453.74 km) |
| Rock Hill to Rakitovo | 5,322.83 mi (8,566.26 km) |
| Rock Hill to Rakovski | 5,347.06 mi (8,605.26 km) |
| Rock Hill to Razgrad | 5,359.03 mi (8,624.52 km) |
| Rock Hill to Razlog | 5,301.05 mi (8,531.21 km) |
| Rock Hill to Ruse | 5,324.51 mi (8,568.97 km) |
| Rock Hill to Samokov | 5,286.62 mi (8,507.99 km) |
| Rock Hill to Sandanski | 5,305.89 mi (8,539.01 km) |
| Rock Hill to Sevlievo | 5,323.10 mi (8,566.70 km) |
| Rock Hill to Shumen | 5,386.12 mi (8,668.13 km) |
| Rock Hill to Silistra | 5,364.36 mi (8,633.11 km) |
| Rock Hill to Sliven | 5,386.85 mi (8,669.29 km) |
