| Glanmire to Oerlinghausen | 725.27 mi (1,167.21 km) |
| Glanmire to Oestrich-Winkel | 724.29 mi (1,165.64 km) |
| Glanmire to Offenburg | 758.88 mi (1,221.31 km) |
| Glanmire to Oftersheim | 762.78 mi (1,227.57 km) |
| Glanmire to Ohrdruf | 826.25 mi (1,329.71 km) |
| Glanmire to Ohringen | 805.57 mi (1,296.44 km) |
| Glanmire to Olbernhau | 939.48 mi (1,511.95 km) |
| Glanmire to Olching | 908.30 mi (1,461.77 km) |
| Glanmire to Oldenburg | 701.84 mi (1,129.50 km) |
| Glanmire to Oldenburg in Holstein | 813.86 mi (1,309.78 km) |
| Glanmire to Olfen | 672.96 mi (1,083.02 km) |
| Glanmire to Olpe | 700.02 mi (1,126.58 km) |
| Glanmire to Olsberg | 723.48 mi (1,164.33 km) |
| Glanmire to Oranienburg | 911.85 mi (1,467.48 km) |
| Glanmire to Ortenberg | 762.51 mi (1,227.14 km) |
