| Seaford to Popovo | 1,323.75 mi (2,130.37 km) |
| Seaford to Provadia | 1,381.10 mi (2,222.66 km) |
| Seaford to Radnevo | 1,350.81 mi (2,173.92 km) |
| Seaford to Radomir | 1,216.39 mi (1,957.59 km) |
| Seaford to Rakitovo | 1,286.28 mi (2,070.07 km) |
| Seaford to Rakovski | 1,310.66 mi (2,109.31 km) |
| Seaford to Razgrad | 1,329.21 mi (2,139.15 km) |
| Seaford to Razlog | 1,264.99 mi (2,035.81 km) |
| Seaford to Ruse | 1,294.78 mi (2,083.75 km) |
| Seaford to Samokov | 1,250.03 mi (2,011.73 km) |
| Seaford to Sandanski | 1,270.69 mi (2,044.98 km) |
| Seaford to Sevlievo | 1,288.26 mi (2,073.26 km) |
| Seaford to Shumen | 1,356.07 mi (2,182.38 km) |
| Seaford to Silistra | 1,340.68 mi (2,157.61 km) |
| Seaford to Sliven | 1,352.88 mi (2,177.26 km) |
