| Pen-y-Bont ar Ogwr to Popovo | 1,490.15 mi (2,398.17 km) |
| Pen-y-Bont ar Ogwr to Provadia | 1,547.19 mi (2,489.97 km) |
| Pen-y-Bont ar Ogwr to Radnevo | 1,517.90 mi (2,442.83 km) |
| Pen-y-Bont ar Ogwr to Radomir | 1,383.77 mi (2,226.96 km) |
| Pen-y-Bont ar Ogwr to Rakitovo | 1,453.66 mi (2,339.44 km) |
| Pen-y-Bont ar Ogwr to Rakovski | 1,477.93 mi (2,378.49 km) |
| Pen-y-Bont ar Ogwr to Razgrad | 1,495.36 mi (2,406.55 km) |
| Pen-y-Bont ar Ogwr to Razlog | 1,432.36 mi (2,305.16 km) |
| Pen-y-Bont ar Ogwr to Ruse | 1,460.90 mi (2,351.10 km) |
| Pen-y-Bont ar Ogwr to Samokov | 1,417.41 mi (2,281.10 km) |
| Pen-y-Bont ar Ogwr to Sandanski | 1,437.99 mi (2,314.22 km) |
| Pen-y-Bont ar Ogwr to Sevlievo | 1,455.22 mi (2,341.95 km) |
| Pen-y-Bont ar Ogwr to Shumen | 1,522.27 mi (2,449.86 km) |
| Pen-y-Bont ar Ogwr to Silistra | 1,505.92 mi (2,423.55 km) |
| Pen-y-Bont ar Ogwr to Sliven | 1,519.70 mi (2,445.72 km) |
