| Gladbeck to Ordu | 1,631.06 mi (2,624.95 km) |
| Gladbeck to Ortahisar | 1,612.94 mi (2,595.77 km) |
| Gladbeck to Ortakent | 1,407.73 mi (2,265.52 km) |
| Gladbeck to Ortaklar | 1,373.09 mi (2,209.77 km) |
| Gladbeck to Ortakoy | 1,574.83 mi (2,534.45 km) |
| Gladbeck to Ortakoy | 1,553.44 mi (2,500.01 km) |
| Gladbeck to Osmaneli | 1,342.13 mi (2,159.96 km) |
| Gladbeck to Osmaniye | 1,741.33 mi (2,802.40 km) |
| Gladbeck to Ozdere | 1,353.00 mi (2,177.44 km) |
| Gladbeck to Palu | 1,815.08 mi (2,921.09 km) |
| Gladbeck to Pamukkale | 1,428.88 mi (2,299.55 km) |
| Gladbeck to Patnos | 1,913.29 mi (3,079.14 km) |
| Gladbeck to Pazar | 1,597.00 mi (2,570.12 km) |
| Gladbeck to Pazarcik | 1,763.19 mi (2,837.57 km) |
| Gladbeck to Pazaryeri | 1,354.26 mi (2,179.47 km) |
