| Pontypridd to Popovo | 1,481.39 mi (2,384.06 km) |
| Pontypridd to Provadia | 1,538.30 mi (2,475.65 km) |
| Pontypridd to Radnevo | 1,509.54 mi (2,429.37 km) |
| Pontypridd to Radomir | 1,375.87 mi (2,214.25 km) |
| Pontypridd to Rakitovo | 1,445.74 mi (2,326.70 km) |
| Pontypridd to Rakovski | 1,469.74 mi (2,365.31 km) |
| Pontypridd to Razgrad | 1,486.49 mi (2,392.28 km) |
| Pontypridd to Razlog | 1,424.61 mi (2,292.68 km) |
| Pontypridd to Ruse | 1,452.02 mi (2,336.80 km) |
| Pontypridd to Samokov | 1,409.47 mi (2,268.32 km) |
| Pontypridd to Sandanski | 1,430.39 mi (2,301.99 km) |
| Pontypridd to Sevlievo | 1,446.75 mi (2,328.31 km) |
| Pontypridd to Shumen | 1,513.42 mi (2,435.62 km) |
| Pontypridd to Silistra | 1,496.76 mi (2,408.80 km) |
| Pontypridd to Sliven | 1,511.14 mi (2,431.95 km) |
