| New Carrollton to Oberkirch | 4,069.98 mi (6,550.00 km) |
| New Carrollton to Obernburg am Main | 4,074.77 mi (6,557.71 km) |
| New Carrollton to Obernkirchen | 4,004.37 mi (6,444.42 km) |
| New Carrollton to Oberschleissheim | 4,221.89 mi (6,794.48 km) |
| New Carrollton to Oberstdorf | 4,195.38 mi (6,751.81 km) |
| New Carrollton to Obertraubling | 4,223.47 mi (6,797.02 km) |
| New Carrollton to Obertshausen | 4,055.74 mi (6,527.08 km) |
| New Carrollton to Oberursel | 4,041.48 mi (6,504.13 km) |
| New Carrollton to Ochsenfurt | 4,117.71 mi (6,626.82 km) |
| New Carrollton to Ochsenhausen | 4,160.99 mi (6,696.47 km) |
| New Carrollton to Ochtrup | 3,931.06 mi (6,326.43 km) |
| New Carrollton to Odenthal | 3,959.70 mi (6,372.53 km) |
| New Carrollton to Oelde | 3,978.68 mi (6,403.06 km) |
| New Carrollton to Oelsnitz | 4,177.88 mi (6,723.65 km) |
| New Carrollton to Oer-Erkenschwick | 3,948.51 mi (6,354.52 km) |
