| DeForest to Opwijk | 4,128.13 mi (6,643.58 km) |
| DeForest to Ostend | 4,072.19 mi (6,553.56 km) |
| DeForest to Oud-Heverlee | 4,150.83 mi (6,680.11 km) |
| DeForest to Oud-Turnhout | 4,144.18 mi (6,669.41 km) |
| DeForest to Oudenaarde | 4,111.04 mi (6,616.08 km) |
| DeForest to Oudenburg | 4,076.70 mi (6,560.82 km) |
| DeForest to Oupeye | 4,191.22 mi (6,745.12 km) |
| DeForest to Overijse | 4,147.82 mi (6,675.27 km) |
| DeForest to Overpelt | 4,163.64 mi (6,700.74 km) |
| DeForest to Paal | 4,161.52 mi (6,697.32 km) |
| DeForest to Peer | 4,168.16 mi (6,708.01 km) |
| DeForest to Pepinster | 4,202.98 mi (6,764.05 km) |
| DeForest to Peruwelz | 4,122.78 mi (6,634.97 km) |
| DeForest to Perwez | 4,164.15 mi (6,701.56 km) |
| DeForest to Philippeville | 4,170.44 mi (6,711.68 km) |
