| Caernarfon to Popovo | 1,542.27 mi (2,482.04 km) |
| Caernarfon to Provadia | 1,597.58 mi (2,571.06 km) |
| Caernarfon to Radnevo | 1,574.69 mi (2,534.22 km) |
| Caernarfon to Radomir | 1,446.00 mi (2,327.11 km) |
| Caernarfon to Rakitovo | 1,515.55 mi (2,439.04 km) |
| Caernarfon to Rakovski | 1,536.79 mi (2,473.22 km) |
| Caernarfon to Razgrad | 1,546.17 mi (2,488.32 km) |
| Caernarfon to Razlog | 1,495.96 mi (2,407.52 km) |
| Caernarfon to Ruse | 1,511.65 mi (2,432.77 km) |
| Caernarfon to Samokov | 1,479.12 mi (2,380.41 km) |
| Caernarfon to Sandanski | 1,503.15 mi (2,419.08 km) |
| Caernarfon to Sevlievo | 1,510.92 mi (2,431.59 km) |
| Caernarfon to Shumen | 1,573.25 mi (2,531.91 km) |
| Caernarfon to Silistra | 1,552.89 mi (2,499.13 km) |
| Caernarfon to Sliven | 1,574.22 mi (2,533.46 km) |
