| Irvine to Oberkirch | 727.80 mi (1,171.28 km) |
| Irvine to Obernburg am Main | 700.18 mi (1,126.83 km) |
| Irvine to Obernkirchen | 605.07 mi (973.77 km) |
| Irvine to Oberschleissheim | 855.20 mi (1,376.31 km) |
| Irvine to Oberstdorf | 853.82 mi (1,374.09 km) |
| Irvine to Obertraubling | 843.46 mi (1,357.42 km) |
| Irvine to Obertshausen | 679.63 mi (1,093.77 km) |
| Irvine to Oberursel | 664.87 mi (1,070.00 km) |
| Irvine to Ochsenfurt | 740.34 mi (1,191.47 km) |
| Irvine to Ochsenhausen | 810.09 mi (1,303.71 km) |
| Irvine to Ochtrup | 536.00 mi (862.61 km) |
| Irvine to Odenthal | 579.07 mi (931.93 km) |
| Irvine to Oelde | 584.23 mi (940.23 km) |
| Irvine to Oelsnitz | 783.65 mi (1,261.16 km) |
| Irvine to Oer-Erkenschwick | 559.07 mi (899.73 km) |
