| Porthcawl to Popovo | 1,494.54 mi (2,405.23 km) |
| Porthcawl to Provadia | 1,551.62 mi (2,497.09 km) |
| Porthcawl to Radnevo | 1,522.16 mi (2,449.68 km) |
| Porthcawl to Radomir | 1,387.87 mi (2,233.55 km) |
| Porthcawl to Rakitovo | 1,457.76 mi (2,346.04 km) |
| Porthcawl to Rakovski | 1,482.12 mi (2,385.25 km) |
| Porthcawl to Razgrad | 1,499.78 mi (2,413.66 km) |
| Porthcawl to Razlog | 1,436.41 mi (2,311.67 km) |
| Porthcawl to Ruse | 1,465.33 mi (2,358.21 km) |
| Porthcawl to Samokov | 1,421.52 mi (2,287.71 km) |
| Porthcawl to Sandanski | 1,441.99 mi (2,320.65 km) |
| Porthcawl to Sevlievo | 1,459.51 mi (2,348.85 km) |
| Porthcawl to Shumen | 1,526.69 mi (2,456.96 km) |
| Porthcawl to Silistra | 1,510.44 mi (2,430.81 km) |
| Porthcawl to Sliven | 1,524.02 mi (2,452.67 km) |
