| Carrigaline to Oerlinghausen | 725.74 mi (1,167.97 km) |
| Carrigaline to Oestrich-Winkel | 723.43 mi (1,164.25 km) |
| Carrigaline to Offenburg | 757.10 mi (1,218.43 km) |
| Carrigaline to Oftersheim | 761.61 mi (1,225.69 km) |
| Carrigaline to Ohrdruf | 826.15 mi (1,329.56 km) |
| Carrigaline to Ohringen | 804.43 mi (1,294.60 km) |
| Carrigaline to Olbernhau | 939.50 mi (1,511.98 km) |
| Carrigaline to Olching | 906.89 mi (1,459.50 km) |
| Carrigaline to Oldenburg | 703.09 mi (1,131.51 km) |
| Carrigaline to Oldenburg in Holstein | 815.78 mi (1,312.88 km) |
| Carrigaline to Olfen | 673.20 mi (1,083.41 km) |
| Carrigaline to Olpe | 699.81 mi (1,126.23 km) |
| Carrigaline to Olsberg | 723.54 mi (1,164.42 km) |
| Carrigaline to Oranienburg | 912.94 mi (1,469.23 km) |
| Carrigaline to Ortenberg | 761.99 mi (1,226.30 km) |
