| The Acreage to Oerlinghausen | 4,739.50 mi (7,627.49 km) |
| The Acreage to Oestrich-Winkel | 4,750.63 mi (7,645.40 km) |
| The Acreage to Offenburg | 4,778.79 mi (7,690.72 km) |
| The Acreage to Oftersheim | 4,788.40 mi (7,706.18 km) |
| The Acreage to Ohrdruf | 4,848.05 mi (7,802.19 km) |
| The Acreage to Ohringen | 4,831.28 mi (7,775.19 km) |
| The Acreage to Olbernhau | 4,959.02 mi (7,980.77 km) |
| The Acreage to Olching | 4,932.02 mi (7,937.32 km) |
| The Acreage to Oldenburg | 4,698.64 mi (7,561.73 km) |
| The Acreage to Oldenburg in Holstein | 4,780.59 mi (7,693.62 km) |
| The Acreage to Olfen | 4,691.65 mi (7,550.48 km) |
| The Acreage to Olpe | 4,723.63 mi (7,601.95 km) |
| The Acreage to Olsberg | 4,744.11 mi (7,634.91 km) |
| The Acreage to Oranienburg | 4,906.03 mi (7,895.49 km) |
| The Acreage to Ortenberg | 4,788.05 mi (7,705.62 km) |
