| Mittegrossefehn to Olympia Heights (Florida) | 4,727.11 mi (7,607.55 km) |
| Mittegrossefehn to Omaha (Nebraska) | 4,486.55 mi (7,220.41 km) |
| Mittegrossefehn to On Top of the World Designated Place (Florida) | 4,625.48 mi (7,443.99 km) |
| Mittegrossefehn to Onalaska (Wisconsin) | 4,187.79 mi (6,739.60 km) |
| Mittegrossefehn to Oneida (New York) | 3,673.75 mi (5,912.33 km) |
| Mittegrossefehn to Oneonta (New York) | 3,680.36 mi (5,922.97 km) |
| Mittegrossefehn to Ontario (California) | 5,564.39 mi (8,955.02 km) |
| Mittegrossefehn to Ontario (Oregon) | 4,951.69 mi (7,968.97 km) |
| Mittegrossefehn to Opa-locka (Florida) | 4,714.46 mi (7,587.18 km) |
| Mittegrossefehn to Opelika (Alabama) | 4,558.02 mi (7,335.42 km) |
| Mittegrossefehn to Opelousas (Louisiana) | 4,922.99 mi (7,922.78 km) |
| Mittegrossefehn to Orange (California) | 5,584.63 mi (8,987.60 km) |
| Mittegrossefehn to Orange (Texas) | 5,006.68 mi (8,057.47 km) |
| Mittegrossefehn to Orange City (Florida) | 4,595.30 mi (7,395.42 km) |
| Mittegrossefehn to Orangeburg (South Carolina) | 4,342.27 mi (6,988.21 km) |
