| Ilkley to Oberkirch | 566.93 mi (912.38 km) |
| Ilkley to Obernburg am Main | 545.29 mi (877.56 km) |
| Ilkley to Obernkirchen | 467.60 mi (752.53 km) |
| Ilkley to Oberschleissheim | 699.22 mi (1,125.28 km) |
| Ilkley to Oberstdorf | 693.69 mi (1,116.39 km) |
| Ilkley to Obertraubling | 691.30 mi (1,112.55 km) |
| Ilkley to Obertshausen | 525.09 mi (845.05 km) |
| Ilkley to Oberursel | 510.39 mi (821.39 km) |
| Ilkley to Ochsenfurt | 586.65 mi (944.12 km) |
| Ilkley to Ochsenhausen | 650.88 mi (1,047.49 km) |
| Ilkley to Ochtrup | 392.26 mi (631.29 km) |
| Ilkley to Odenthal | 425.49 mi (684.77 km) |
| Ilkley to Oelde | 439.76 mi (707.72 km) |
| Ilkley to Oelsnitz | 639.06 mi (1,028.47 km) |
| Ilkley to Oer-Erkenschwick | 410.27 mi (660.27 km) |
