| Porthcawl to Karlovo | 1,461.46 mi (2,352.00 km) |
| Porthcawl to Karnobat | 1,553.37 mi (2,499.91 km) |
| Porthcawl to Kavarna | 1,580.70 mi (2,543.90 km) |
| Porthcawl to Kazanlak | 1,487.36 mi (2,393.67 km) |
| Porthcawl to Knezha | 1,398.20 mi (2,250.18 km) |
| Porthcawl to Kostinbrod | 1,388.30 mi (2,234.25 km) |
| Porthcawl to Kozloduy | 1,372.89 mi (2,209.46 km) |
| Porthcawl to Kyustendil | 1,387.68 mi (2,233.25 km) |
| Porthcawl to Levski | 1,447.43 mi (2,329.41 km) |
| Porthcawl to Lom | 1,350.47 mi (2,173.37 km) |
| Porthcawl to Lovech | 1,438.69 mi (2,315.34 km) |
| Porthcawl to Lukovit | 1,413.08 mi (2,274.13 km) |
| Porthcawl to Lyaskovets | 1,482.09 mi (2,385.19 km) |
| Porthcawl to Mezdra | 1,395.45 mi (2,245.75 km) |
| Porthcawl to Momchilgrad | 1,531.52 mi (2,464.74 km) |
