| Bethesda to Oberkirch | 4,079.03 mi (6,564.57 km) |
| Bethesda to Obernburg am Main | 4,083.54 mi (6,571.82 km) |
| Bethesda to Obernkirchen | 4,012.70 mi (6,457.81 km) |
| Bethesda to Oberschleissheim | 4,230.80 mi (6,808.81 km) |
| Bethesda to Oberstdorf | 4,204.50 mi (6,766.49 km) |
| Bethesda to Obertraubling | 4,232.22 mi (6,811.10 km) |
| Bethesda to Obertshausen | 4,064.48 mi (6,541.15 km) |
| Bethesda to Oberursel | 4,050.21 mi (6,518.18 km) |
| Bethesda to Ochsenfurt | 4,126.46 mi (6,640.90 km) |
| Bethesda to Ochsenhausen | 4,170.02 mi (6,711.00 km) |
| Bethesda to Ochtrup | 3,939.49 mi (6,340.00 km) |
| Bethesda to Odenthal | 3,968.36 mi (6,386.46 km) |
| Bethesda to Oelde | 3,987.13 mi (6,416.67 km) |
| Bethesda to Oelsnitz | 4,186.38 mi (6,737.32 km) |
| Bethesda to Oer-Erkenschwick | 3,957.05 mi (6,368.26 km) |
