| Aberystwyth to Popovo | 1,523.39 mi (2,451.66 km) |
| Aberystwyth to Provadia | 1,579.51 mi (2,541.98 km) |
| Aberystwyth to Radnevo | 1,553.74 mi (2,500.50 km) |
| Aberystwyth to Radomir | 1,422.52 mi (2,289.32 km) |
| Aberystwyth to Rakitovo | 1,492.26 mi (2,401.56 km) |
| Aberystwyth to Rakovski | 1,514.88 mi (2,437.96 km) |
| Aberystwyth to Razgrad | 1,527.88 mi (2,458.89 km) |
| Aberystwyth to Razlog | 1,471.89 mi (2,368.78 km) |
| Aberystwyth to Ruse | 1,493.37 mi (2,403.34 km) |
| Aberystwyth to Samokov | 1,455.89 mi (2,343.03 km) |
| Aberystwyth to Sandanski | 1,478.37 mi (2,379.21 km) |
| Aberystwyth to Sevlievo | 1,490.42 mi (2,398.59 km) |
| Aberystwyth to Shumen | 1,554.90 mi (2,502.38 km) |
| Aberystwyth to Silistra | 1,536.32 mi (2,472.47 km) |
| Aberystwyth to Sliven | 1,554.29 mi (2,501.38 km) |
