| Sortland to Popovo | 1,794.32 mi (2,887.68 km) |
| Sortland to Provadia | 1,815.55 mi (2,921.84 km) |
| Sortland to Radnevo | 1,863.75 mi (2,999.41 km) |
| Sortland to Radomir | 1,827.32 mi (2,940.79 km) |
| Sortland to Rakitovo | 1,872.81 mi (3,013.99 km) |
| Sortland to Rakovski | 1,857.63 mi (2,989.56 km) |
| Sortland to Razgrad | 1,784.07 mi (2,871.18 km) |
| Sortland to Razlog | 1,876.00 mi (3,019.13 km) |
| Sortland to Ruse | 1,759.86 mi (2,832.22 km) |
| Sortland to Samokov | 1,845.36 mi (2,969.82 km) |
| Sortland to Sandanski | 1,896.60 mi (3,052.29 km) |
| Sortland to Sevlievo | 1,808.19 mi (2,909.99 km) |
| Sortland to Shumen | 1,804.51 mi (2,904.08 km) |
| Sortland to Silistra | 1,750.50 mi (2,817.16 km) |
| Sortland to Sliven | 1,840.62 mi (2,962.18 km) |
