| Giffnock to Oberkirch | 724.37 mi (1,165.75 km) |
| Giffnock to Obernburg am Main | 694.18 mi (1,117.17 km) |
| Giffnock to Obernkirchen | 595.36 mi (958.14 km) |
| Giffnock to Oberschleissheim | 849.39 mi (1,366.95 km) |
| Giffnock to Oberstdorf | 849.83 mi (1,367.67 km) |
| Giffnock to Obertraubling | 836.46 mi (1,346.15 km) |
| Giffnock to Obertshausen | 673.55 mi (1,083.98 km) |
| Giffnock to Oberursel | 658.79 mi (1,060.22 km) |
| Giffnock to Ochsenfurt | 733.91 mi (1,181.12 km) |
| Giffnock to Ochsenhausen | 805.65 mi (1,296.57 km) |
| Giffnock to Ochtrup | 527.63 mi (849.14 km) |
| Giffnock to Odenthal | 572.88 mi (921.96 km) |
| Giffnock to Oelde | 575.86 mi (926.76 km) |
| Giffnock to Oelsnitz | 774.92 mi (1,247.11 km) |
| Giffnock to Oer-Erkenschwick | 551.70 mi (887.87 km) |
