| Tigard to Oberkirch | 5,301.01 mi (8,531.15 km) |
| Tigard to Obernburg am Main | 5,251.01 mi (8,450.69 km) |
| Tigard to Obernkirchen | 5,109.44 mi (8,222.85 km) |
| Tigard to Oberschleissheim | 5,402.18 mi (8,693.97 km) |
| Tigard to Oberstdorf | 5,420.90 mi (8,724.10 km) |
| Tigard to Obertraubling | 5,373.65 mi (8,648.06 km) |
| Tigard to Obertshausen | 5,230.43 mi (8,417.57 km) |
| Tigard to Oberursel | 5,216.34 mi (8,394.89 km) |
| Tigard to Ochsenfurt | 5,284.16 mi (8,504.03 km) |
| Tigard to Ochsenhausen | 5,373.87 mi (8,648.41 km) |
| Tigard to Ochtrup | 5,067.88 mi (8,155.96 km) |
| Tigard to Odenthal | 5,133.20 mi (8,261.08 km) |
| Tigard to Oelde | 5,111.96 mi (8,226.90 km) |
| Tigard to Oelsnitz | 5,287.39 mi (8,509.22 km) |
| Tigard to Oer-Erkenschwick | 5,101.56 mi (8,210.17 km) |
