| Stone Ridge to Popovo | 5,026.66 mi (8,089.63 km) |
| Stone Ridge to Provadia | 5,081.29 mi (8,177.55 km) |
| Stone Ridge to Radnevo | 5,059.07 mi (8,141.78 km) |
| Stone Ridge to Radomir | 4,927.13 mi (7,929.45 km) |
| Stone Ridge to Rakitovo | 4,997.00 mi (8,041.89 km) |
| Stone Ridge to Rakovski | 5,020.34 mi (8,079.45 km) |
| Stone Ridge to Razgrad | 5,030.14 mi (8,095.23 km) |
| Stone Ridge to Razlog | 4,975.74 mi (8,007.68 km) |
| Stone Ridge to Ruse | 4,995.64 mi (8,039.71 km) |
| Stone Ridge to Samokov | 4,960.71 mi (7,983.49 km) |
| Stone Ridge to Sandanski | 4,981.09 mi (8,016.28 km) |
| Stone Ridge to Sevlievo | 4,995.49 mi (8,039.47 km) |
| Stone Ridge to Shumen | 5,057.25 mi (8,138.86 km) |
| Stone Ridge to Silistra | 5,034.56 mi (8,102.34 km) |
| Stone Ridge to Sliven | 5,058.90 mi (8,141.51 km) |
