| Caerfyrddin to Devnya | 1,586.71 mi (2,553.57 km) |
| Caerfyrddin to Dimitrovgrad | 1,550.45 mi (2,495.20 km) |
| Caerfyrddin to Dobrich | 1,584.82 mi (2,550.52 km) |
| Caerfyrddin to Dospat | 1,508.04 mi (2,426.96 km) |
| Caerfyrddin to Dupnitsa | 1,439.45 mi (2,316.57 km) |
| Caerfyrddin to Elhovo | 1,585.86 mi (2,552.19 km) |
| Caerfyrddin to Etropole | 1,452.62 mi (2,337.76 km) |
| Caerfyrddin to Gabrovo | 1,506.65 mi (2,424.73 km) |
| Caerfyrddin to Gorna Oryahovitsa | 1,511.57 mi (2,432.64 km) |
| Caerfyrddin to Gotse Delchev | 1,493.87 mi (2,404.16 km) |
| Caerfyrddin to Harmanli | 1,567.64 mi (2,522.87 km) |
| Caerfyrddin to Haskovo | 1,553.85 mi (2,500.67 km) |
| Caerfyrddin to Ihtiman | 1,461.01 mi (2,351.26 km) |
| Caerfyrddin to Isperih | 1,537.07 mi (2,473.68 km) |
| Caerfyrddin to Kardzhali | 1,557.30 mi (2,506.24 km) |
