| Popovo to Oestrich-Winkel | 975.33 mi (1,569.65 km) |
| Popovo to Offenburg | 945.22 mi (1,521.19 km) |
| Popovo to Oftersheim | 935.67 mi (1,505.82 km) |
| Popovo to Ohrdruf | 890.82 mi (1,433.64 km) |
| Popovo to Ohringen | 892.88 mi (1,436.96 km) |
| Popovo to Olbernhau | 788.59 mi (1,269.12 km) |
| Popovo to Olching | 791.36 mi (1,273.57 km) |
| Popovo to Oldenburg | 1,064.97 mi (1,713.90 km) |
| Popovo to Oldenburg in Holstein | 1,025.17 mi (1,649.86 km) |
| Popovo to Olfen | 1,047.53 mi (1,685.83 km) |
| Popovo to Olpe | 1,009.32 mi (1,624.34 km) |
| Popovo to Olsberg | 993.91 mi (1,599.55 km) |
| Popovo to Oranienburg | 881.95 mi (1,419.36 km) |
| Popovo to Ortenberg | 941.74 mi (1,515.58 km) |
| Popovo to Oschatz | 822.20 mi (1,323.21 km) |
