| Ridderkerk to Montana | 1,040.83 mi (1,675.05 km) |
| Ridderkerk to Nova Zagora | 1,189.35 mi (1,914.08 km) |
| Ridderkerk to Novi Iskar | 1,073.45 mi (1,727.56 km) |
| Ridderkerk to Novi Pazar | 1,198.88 mi (1,929.42 km) |
| Ridderkerk to Omurtag | 1,178.38 mi (1,896.43 km) |
| Ridderkerk to Panagyurishte | 1,118.76 mi (1,800.48 km) |
| Ridderkerk to Parvomay | 1,176.49 mi (1,893.37 km) |
| Ridderkerk to Pavlikeni | 1,129.18 mi (1,817.24 km) |
| Ridderkerk to Pazardzhik | 1,138.39 mi (1,832.07 km) |
| Ridderkerk to Pernik | 1,070.98 mi (1,723.57 km) |
| Ridderkerk to Peshtera | 1,144.99 mi (1,842.68 km) |
| Ridderkerk to Petrich | 1,135.66 mi (1,827.67 km) |
| Ridderkerk to Pleven | 1,094.64 mi (1,761.66 km) |
| Ridderkerk to Plovdiv | 1,156.45 mi (1,861.13 km) |
| Ridderkerk to Pomorie | 1,248.79 mi (2,009.73 km) |
