| South Valley to Popovo | 6,264.82 mi (10,082.26 km) |
| South Valley to Provadia | 6,309.95 mi (10,154.89 km) |
| South Valley to Radnevo | 6,313.64 mi (10,160.83 km) |
| South Valley to Radomir | 6,206.18 mi (9,987.88 km) |
| South Valley to Rakitovo | 6,272.97 mi (10,095.38 km) |
| South Valley to Rakovski | 6,284.23 mi (10,113.49 km) |
| South Valley to Razgrad | 6,263.19 mi (10,079.63 km) |
| South Valley to Razlog | 6,258.62 mi (10,072.28 km) |
| South Valley to Ruse | 6,230.30 mi (10,026.69 km) |
| South Valley to Samokov | 6,237.01 mi (10,037.50 km) |
| South Valley to Sandanski | 6,269.63 mi (10,089.99 km) |
| South Valley to Sevlievo | 6,248.51 mi (10,056.01 km) |
| South Valley to Shumen | 6,289.51 mi (10,121.99 km) |
| South Valley to Silistra | 6,252.72 mi (10,062.78 km) |
| South Valley to Sliven | 6,304.72 mi (10,146.47 km) |
