| Kopavogur to Oberkirch | 1,547.65 mi (2,490.70 km) |
| Kopavogur to Obernburg am Main | 1,502.97 mi (2,418.79 km) |
| Kopavogur to Obernkirchen | 1,372.77 mi (2,209.26 km) |
| Kopavogur to Oberschleissheim | 1,656.75 mi (2,666.28 km) |
| Kopavogur to Oberstdorf | 1,669.36 mi (2,686.57 km) |
| Kopavogur to Obertraubling | 1,633.72 mi (2,629.22 km) |
| Kopavogur to Obertshausen | 1,482.20 mi (2,385.38 km) |
| Kopavogur to Oberursel | 1,467.79 mi (2,362.19 km) |
| Kopavogur to Ochsenfurt | 1,538.54 mi (2,476.04 km) |
| Kopavogur to Ochsenhausen | 1,623.03 mi (2,612.01 km) |
| Kopavogur to Ochtrup | 1,322.51 mi (2,128.38 km) |
| Kopavogur to Odenthal | 1,383.21 mi (2,226.06 km) |
| Kopavogur to Oelde | 1,368.52 mi (2,202.42 km) |
| Kopavogur to Oelsnitz | 1,555.41 mi (2,503.19 km) |
| Kopavogur to Oer-Erkenschwick | 1,354.04 mi (2,179.12 km) |
