| Carrigaline to Oberkirch | 761.53 mi (1,225.57 km) |
| Carrigaline to Obernburg am Main | 775.25 mi (1,247.65 km) |
| Carrigaline to Obernkirchen | 742.91 mi (1,195.60 km) |
| Carrigaline to Oberschleissheim | 916.10 mi (1,474.32 km) |
| Carrigaline to Oberstdorf | 886.53 mi (1,426.74 km) |
| Carrigaline to Obertraubling | 923.41 mi (1,486.08 km) |
| Carrigaline to Obertshausen | 757.70 mi (1,219.41 km) |
| Carrigaline to Oberursel | 744.24 mi (1,197.74 km) |
| Carrigaline to Ochsenfurt | 818.60 mi (1,317.41 km) |
| Carrigaline to Ochsenhausen | 852.78 mi (1,372.42 km) |
| Carrigaline to Ochtrup | 661.88 mi (1,065.19 km) |
| Carrigaline to Odenthal | 669.00 mi (1,076.65 km) |
| Carrigaline to Oelde | 704.83 mi (1,134.32 km) |
| Carrigaline to Oelsnitz | 893.83 mi (1,438.48 km) |
| Carrigaline to Oer-Erkenschwick | 668.19 mi (1,075.35 km) |
