| Somerset to Oberkirch | 3,904.79 mi (6,284.16 km) |
| Somerset to Obernburg am Main | 3,909.55 mi (6,291.81 km) |
| Somerset to Obernkirchen | 3,839.38 mi (6,178.88 km) |
| Somerset to Oberschleissheim | 4,056.67 mi (6,528.57 km) |
| Somerset to Oberstdorf | 4,030.22 mi (6,486.02 km) |
| Somerset to Obertraubling | 4,058.25 mi (6,531.12 km) |
| Somerset to Obertshausen | 3,890.52 mi (6,261.18 km) |
| Somerset to Oberursel | 3,876.26 mi (6,238.23 km) |
| Somerset to Ochsenfurt | 3,952.49 mi (6,360.92 km) |
| Somerset to Ochsenhausen | 3,995.80 mi (6,430.61 km) |
| Somerset to Ochtrup | 3,765.98 mi (6,060.76 km) |
| Somerset to Odenthal | 3,794.50 mi (6,106.66 km) |
| Somerset to Oelde | 3,813.58 mi (6,137.36 km) |
| Somerset to Oelsnitz | 4,012.75 mi (6,457.90 km) |
| Somerset to Oer-Erkenschwick | 3,783.37 mi (6,088.74 km) |
