| Socastee to Popovo | 5,333.48 mi (8,583.41 km) |
| Socastee to Provadia | 5,389.56 mi (8,673.66 km) |
| Socastee to Radnevo | 5,362.15 mi (8,629.55 km) |
| Socastee to Radomir | 5,226.01 mi (8,410.45 km) |
| Socastee to Rakitovo | 5,295.94 mi (8,522.98 km) |
| Socastee to Rakovski | 5,321.76 mi (8,564.54 km) |
| Socastee to Razgrad | 5,337.97 mi (8,590.64 km) |
| Socastee to Razlog | 5,273.29 mi (8,486.54 km) |
| Socastee to Ruse | 5,303.46 mi (8,535.09 km) |
| Socastee to Samokov | 5,259.91 mi (8,465.00 km) |
| Socastee to Sandanski | 5,277.28 mi (8,492.96 km) |
| Socastee to Sevlievo | 5,299.49 mi (8,528.70 km) |
| Socastee to Shumen | 5,365.01 mi (8,634.14 km) |
| Socastee to Silistra | 5,345.32 mi (8,602.46 km) |
| Socastee to Sliven | 5,363.84 mi (8,632.27 km) |
