| Serpa to Montana | 1,648.44 mi (2,652.91 km) |
| Serpa to Nova Zagora | 1,788.93 mi (2,879.01 km) |
| Serpa to Novi Iskar | 1,653.51 mi (2,661.06 km) |
| Serpa to Novi Pazar | 1,848.09 mi (2,974.21 km) |
| Serpa to Omurtag | 1,808.76 mi (2,910.92 km) |
| Serpa to Panagyurishte | 1,695.65 mi (2,728.89 km) |
| Serpa to Parvomay | 1,748.86 mi (2,814.52 km) |
| Serpa to Pavlikeni | 1,753.61 mi (2,822.16 km) |
| Serpa to Pazardzhik | 1,703.47 mi (2,741.47 km) |
| Serpa to Pernik | 1,637.17 mi (2,634.77 km) |
| Serpa to Peshtera | 1,701.96 mi (2,739.04 km) |
| Serpa to Petrich | 1,646.78 mi (2,650.23 km) |
| Serpa to Pleven | 1,718.59 mi (2,765.81 km) |
| Serpa to Plovdiv | 1,724.86 mi (2,775.90 km) |
| Serpa to Pomorie | 1,870.32 mi (3,009.99 km) |
