| Douglas to Montana | 1,570.25 mi (2,527.08 km) |
| Douglas to Nova Zagora | 1,722.95 mi (2,772.82 km) |
| Douglas to Novi Iskar | 1,598.86 mi (2,573.12 km) |
| Douglas to Novi Pazar | 1,740.66 mi (2,801.32 km) |
| Douglas to Omurtag | 1,716.76 mi (2,762.86 km) |
| Douglas to Panagyurishte | 1,645.52 mi (2,648.21 km) |
| Douglas to Parvomay | 1,704.67 mi (2,743.40 km) |
| Douglas to Pavlikeni | 1,665.05 mi (2,679.64 km) |
| Douglas to Pazardzhik | 1,663.63 mi (2,677.36 km) |
| Douglas to Pernik | 1,593.40 mi (2,564.33 km) |
| Douglas to Peshtera | 1,668.87 mi (2,685.79 km) |
| Douglas to Petrich | 1,649.26 mi (2,654.23 km) |
| Douglas to Pleven | 1,629.23 mi (2,622.00 km) |
| Douglas to Plovdiv | 1,683.09 mi (2,708.67 km) |
| Douglas to Pomorie | 1,787.74 mi (2,877.09 km) |
