| Watsonville to Oberkirch | 5,778.55 mi (9,299.68 km) |
| Watsonville to Obernburg am Main | 5,736.52 mi (9,232.04 km) |
| Watsonville to Obernkirchen | 5,603.07 mi (9,017.27 km) |
| Watsonville to Oberschleissheim | 5,890.19 mi (9,479.34 km) |
| Watsonville to Oberstdorf | 5,901.88 mi (9,498.15 km) |
| Watsonville to Obertraubling | 5,865.85 mi (9,440.17 km) |
| Watsonville to Obertshausen | 5,715.76 mi (9,198.62 km) |
| Watsonville to Oberursel | 5,701.34 mi (9,175.41 km) |
| Watsonville to Ochsenfurt | 5,771.94 mi (9,289.04 km) |
| Watsonville to Ochsenhausen | 5,855.98 mi (9,424.28 km) |
| Watsonville to Ochtrup | 5,555.70 mi (8,941.04 km) |
| Watsonville to Odenthal | 5,616.62 mi (9,039.07 km) |
| Watsonville to Oelde | 5,601.30 mi (9,014.42 km) |
| Watsonville to Oelsnitz | 5,784.08 mi (9,308.57 km) |
| Watsonville to Oer-Erkenschwick | 5,587.57 mi (8,992.32 km) |
