| Athens to Oberkirch | 1,068.99 mi (1,720.38 km) |
| Athens to Obernburg am Main | 1,090.72 mi (1,755.35 km) |
| Athens to Obernkirchen | 1,212.05 mi (1,950.61 km) |
| Athens to Oberschleissheim | 935.41 mi (1,505.40 km) |
| Athens to Oberstdorf | 941.16 mi (1,514.65 km) |
| Athens to Obertraubling | 952.56 mi (1,533.00 km) |
| Athens to Obertshausen | 1,111.42 mi (1,788.66 km) |
| Athens to Oberursel | 1,126.17 mi (1,812.39 km) |
| Athens to Ochsenfurt | 1,051.88 mi (1,692.84 km) |
| Athens to Ochsenhausen | 982.16 mi (1,580.63 km) |
| Athens to Ochtrup | 1,265.08 mi (2,035.95 km) |
| Athens to Odenthal | 1,212.11 mi (1,950.70 km) |
| Athens to Oelde | 1,218.04 mi (1,960.25 km) |
| Athens to Oelsnitz | 1,029.73 mi (1,657.19 km) |
| Athens to Oer-Erkenschwick | 1,236.24 mi (1,989.54 km) |
