| Brookings to Oberkirch | 4,581.69 mi (7,373.52 km) |
| Brookings to Obernburg am Main | 4,558.48 mi (7,336.16 km) |
| Brookings to Obernkirchen | 4,448.42 mi (7,159.03 km) |
| Brookings to Oberschleissheim | 4,713.60 mi (7,585.81 km) |
| Brookings to Oberstdorf | 4,709.16 mi (7,578.66 km) |
| Brookings to Obertraubling | 4,699.87 mi (7,563.72 km) |
| Brookings to Obertshausen | 4,537.86 mi (7,302.98 km) |
| Brookings to Oberursel | 4,523.10 mi (7,279.23 km) |
| Brookings to Ochsenfurt | 4,598.14 mi (7,400.00 km) |
| Brookings to Ochsenhausen | 4,666.97 mi (7,510.76 km) |
| Brookings to Ochtrup | 4,388.33 mi (7,062.33 km) |
| Brookings to Odenthal | 4,437.20 mi (7,140.98 km) |
| Brookings to Oelde | 4,436.18 mi (7,139.34 km) |
| Brookings to Oelsnitz | 4,631.62 mi (7,453.88 km) |
| Brookings to Oer-Erkenschwick | 4,414.94 mi (7,105.17 km) |
