| Happy Valley to Oberkirch | 5,293.38 mi (8,518.87 km) |
| Happy Valley to Obernburg am Main | 5,243.64 mi (8,438.82 km) |
| Happy Valley to Obernkirchen | 5,102.34 mi (8,211.42 km) |
| Happy Valley to Oberschleissheim | 5,394.91 mi (8,682.28 km) |
| Happy Valley to Oberstdorf | 5,413.40 mi (8,712.02 km) |
| Happy Valley to Obertraubling | 5,366.53 mi (8,636.59 km) |
| Happy Valley to Obertshausen | 5,223.05 mi (8,405.69 km) |
| Happy Valley to Oberursel | 5,208.95 mi (8,382.99 km) |
| Happy Valley to Ochsenfurt | 5,276.87 mi (8,492.31 km) |
| Happy Valley to Ochsenhausen | 5,366.40 mi (8,636.39 km) |
| Happy Valley to Ochtrup | 5,060.57 mi (8,144.19 km) |
| Happy Valley to Odenthal | 5,125.74 mi (8,249.09 km) |
| Happy Valley to Oelde | 5,104.70 mi (8,215.23 km) |
| Happy Valley to Oelsnitz | 5,280.41 mi (8,498.01 km) |
| Happy Valley to Oer-Erkenschwick | 5,094.19 mi (8,198.31 km) |
