| Pernik to Oestrich-Winkel | 878.51 mi (1,413.83 km) |
| Pernik to Offenburg | 833.62 mi (1,341.58 km) |
| Pernik to Oftersheim | 834.46 mi (1,342.94 km) |
| Pernik to Ohrdruf | 812.10 mi (1,306.95 km) |
| Pernik to Ohringen | 792.72 mi (1,275.76 km) |
| Pernik to Olbernhau | 721.55 mi (1,161.23 km) |
| Pernik to Olching | 686.43 mi (1,104.70 km) |
| Pernik to Oldenburg | 997.40 mi (1,605.16 km) |
| Pernik to Oldenburg in Holstein | 978.61 mi (1,574.92 km) |
| Pernik to Olfen | 964.60 mi (1,552.38 km) |
| Pernik to Olpe | 921.50 mi (1,483.02 km) |
| Pernik to Olsberg | 911.37 mi (1,466.71 km) |
| Pernik to Oranienburg | 834.96 mi (1,343.73 km) |
| Pernik to Ortenberg | 851.71 mi (1,370.69 km) |
| Pernik to Oschatz | 760.51 mi (1,223.93 km) |
