| Serris to Montana | 1,044.43 mi (1,680.84 km) |
| Serris to Nova Zagora | 1,198.67 mi (1,929.07 km) |
| Serris to Novi Iskar | 1,070.54 mi (1,722.87 km) |
| Serris to Novi Pazar | 1,223.69 mi (1,969.34 km) |
| Serris to Omurtag | 1,196.48 mi (1,925.54 km) |
| Serris to Panagyurishte | 1,117.56 mi (1,798.54 km) |
| Serris to Parvomay | 1,177.08 mi (1,894.32 km) |
| Serris to Pavlikeni | 1,143.01 mi (1,839.49 km) |
| Serris to Pazardzhik | 1,134.78 mi (1,826.24 km) |
| Serris to Pernik | 1,063.71 mi (1,711.87 km) |
| Serris to Peshtera | 1,139.34 mi (1,833.60 km) |
| Serris to Petrich | 1,116.17 mi (1,796.30 km) |
| Serris to Pleven | 1,106.48 mi (1,780.71 km) |
| Serris to Plovdiv | 1,154.81 mi (1,858.49 km) |
| Serris to Pomorie | 1,267.40 mi (2,039.69 km) |
