| Gherla to Oberkirch | 740.44 mi (1,191.63 km) |
| Gherla to Obernburg am Main | 702.79 mi (1,131.03 km) |
| Gherla to Obernkirchen | 752.21 mi (1,210.57 km) |
| Gherla to Oberschleissheim | 579.83 mi (933.14 km) |
| Gherla to Oberstdorf | 639.00 mi (1,028.37 km) |
| Gherla to Obertraubling | 558.31 mi (898.51 km) |
| Gherla to Obertshausen | 719.19 mi (1,157.42 km) |
| Gherla to Oberursel | 732.19 mi (1,178.34 km) |
| Gherla to Ochsenfurt | 659.77 mi (1,061.80 km) |
| Gherla to Ochsenhausen | 653.82 mi (1,052.22 km) |
| Gherla to Ochtrup | 826.87 mi (1,330.73 km) |
| Gherla to Odenthal | 807.16 mi (1,299.00 km) |
| Gherla to Oelde | 779.91 mi (1,255.14 km) |
| Gherla to Oelsnitz | 583.25 mi (938.65 km) |
| Gherla to Oer-Erkenschwick | 812.51 mi (1,307.61 km) |
