| Elk City to Oberkirch | 5,130.04 mi (8,256.01 km) |
| Elk City to Obernburg am Main | 5,115.09 mi (8,231.94 km) |
| Elk City to Obernkirchen | 5,015.23 mi (8,071.24 km) |
| Elk City to Oberschleissheim | 5,269.08 mi (8,479.76 km) |
| Elk City to Oberstdorf | 5,257.88 mi (8,461.74 km) |
| Elk City to Obertraubling | 5,259.71 mi (8,464.69 km) |
| Elk City to Obertshausen | 5,094.77 mi (8,199.24 km) |
| Elk City to Oberursel | 5,080.03 mi (8,175.52 km) |
| Elk City to Ochsenfurt | 5,156.02 mi (8,297.82 km) |
| Elk City to Ochsenhausen | 5,217.77 mi (8,397.19 km) |
| Elk City to Ochtrup | 4,951.06 mi (7,967.96 km) |
| Elk City to Odenthal | 4,994.63 mi (8,038.08 km) |
| Elk City to Oelde | 4,999.24 mi (8,045.50 km) |
| Elk City to Oelsnitz | 5,197.27 mi (8,364.20 km) |
| Elk City to Oer-Erkenschwick | 4,975.34 mi (8,007.04 km) |
