| Ilica to Oberkirch | 1,722.89 mi (2,772.72 km) |
| Ilica to Obernburg am Main | 1,690.87 mi (2,721.19 km) |
| Ilica to Obernkirchen | 1,732.74 mi (2,788.57 km) |
| Ilica to Oberschleissheim | 1,562.00 mi (2,513.80 km) |
| Ilica to Oberstdorf | 1,612.04 mi (2,594.33 km) |
| Ilica to Obertraubling | 1,545.15 mi (2,486.68 km) |
| Ilica to Obertshausen | 1,707.45 mi (2,747.87 km) |
| Ilica to Oberursel | 1,720.48 mi (2,768.85 km) |
| Ilica to Ochsenfurt | 1,647.74 mi (2,651.79 km) |
| Ilica to Ochsenhausen | 1,633.55 mi (2,628.95 km) |
| Ilica to Ochtrup | 1,810.22 mi (2,913.26 km) |
| Ilica to Odenthal | 1,794.90 mi (2,888.61 km) |
| Ilica to Oelde | 1,764.27 mi (2,839.32 km) |
| Ilica to Oelsnitz | 1,570.33 mi (2,527.21 km) |
| Ilica to Oer-Erkenschwick | 1,798.43 mi (2,894.29 km) |
