| Cities | Distance |
|---|
| Regen to Montana | 615.88 mi (991.17 km) |
| Regen to Nova Zagora | 763.95 mi (1,229.45 km) |
| Regen to Novi Iskar | 649.39 mi (1,045.09 km) |
| Regen to Novi Pazar | 775.30 mi (1,247.73 km) |
| Regen to Omurtag | 753.57 mi (1,212.75 km) |
| Regen to Panagyurishte | 694.21 mi (1,117.22 km) |
| Regen to Parvomay | 751.53 mi (1,209.46 km) |
| Regen to Pavlikeni | 703.89 mi (1,132.80 km) |
| Regen to Pazardzhik | 714.16 mi (1,149.33 km) |
| Regen to Pernik | 647.91 mi (1,042.71 km) |
| Regen to Peshtera | 721.11 mi (1,160.51 km) |
| Regen to Petrich | 715.98 mi (1,152.26 km) |
| Regen to Pleven | 669.25 mi (1,077.05 km) |
| Regen to Plovdiv | 731.83 mi (1,177.77 km) |
| Regen to Pomorie | 824.19 mi (1,326.41 km) |
