| Cortland to Oberkirch | 3,884.69 mi (6,251.80 km) |
| Cortland to Obernburg am Main | 3,884.27 mi (6,251.12 km) |
| Cortland to Obernkirchen | 3,806.48 mi (6,125.93 km) |
| Cortland to Oberschleissheim | 4,033.69 mi (6,491.60 km) |
| Cortland to Oberstdorf | 4,011.20 mi (6,455.41 km) |
| Cortland to Obertraubling | 4,032.48 mi (6,489.65 km) |
| Cortland to Obertshausen | 3,864.84 mi (6,219.85 km) |
| Cortland to Oberursel | 3,850.40 mi (6,196.62 km) |
| Cortland to Ochsenfurt | 3,926.86 mi (6,319.67 km) |
| Cortland to Ochsenhausen | 3,975.13 mi (6,397.35 km) |
| Cortland to Ochtrup | 3,735.00 mi (6,010.91 km) |
| Cortland to Odenthal | 3,767.40 mi (6,063.04 km) |
| Cortland to Oelde | 3,782.94 mi (6,088.06 km) |
| Cortland to Oelsnitz | 3,982.63 mi (6,409.43 km) |
| Cortland to Oer-Erkenschwick | 3,754.17 mi (6,041.75 km) |
