| Varna to Obernburg am Main | 999.18 mi (1,608.03 km) |
| Varna to Obernkirchen | 1,069.02 mi (1,720.42 km) |
| Varna to Oberschleissheim | 859.57 mi (1,383.35 km) |
| Varna to Oberstdorf | 902.26 mi (1,452.05 km) |
| Varna to Obertraubling | 850.56 mi (1,368.84 km) |
| Varna to Obertshausen | 1,017.45 mi (1,637.43 km) |
| Varna to Oberursel | 1,031.39 mi (1,659.86 km) |
| Varna to Ochsenfurt | 955.89 mi (1,538.35 km) |
| Varna to Ochsenhausen | 927.82 mi (1,493.19 km) |
| Varna to Ochtrup | 1,140.11 mi (1,834.84 km) |
| Varna to Odenthal | 1,111.55 mi (1,788.86 km) |
| Varna to Oelde | 1,092.26 mi (1,757.82 km) |
| Varna to Oelsnitz | 892.74 mi (1,436.73 km) |
| Varna to Oer-Erkenschwick | 1,121.96 mi (1,805.62 km) |
| Varna to Oerlinghausen | 1,076.46 mi (1,732.40 km) |
