| Milwaukee to Opwijk | 4,085.30 mi (6,574.66 km) |
| Milwaukee to Ostend | 4,029.14 mi (6,484.28 km) |
| Milwaukee to Oud-Heverlee | 4,108.06 mi (6,611.28 km) |
| Milwaukee to Oud-Turnhout | 4,101.99 mi (6,601.51 km) |
| Milwaukee to Oudenaarde | 4,067.88 mi (6,546.62 km) |
| Milwaukee to Oudenburg | 4,033.64 mi (6,491.52 km) |
| Milwaukee to Oupeye | 4,148.71 mi (6,676.71 km) |
| Milwaukee to Overijse | 4,104.95 mi (6,606.29 km) |
| Milwaukee to Overpelt | 4,121.53 mi (6,632.96 km) |
| Milwaukee to Paal | 4,119.14 mi (6,629.11 km) |
| Milwaukee to Peer | 4,125.98 mi (6,640.12 km) |
| Milwaukee to Pepinster | 4,160.41 mi (6,695.53 km) |
| Milwaukee to Peruwelz | 4,079.30 mi (6,565.00 km) |
| Milwaukee to Perwez | 4,121.24 mi (6,632.50 km) |
| Milwaukee to Philippeville | 4,127.03 mi (6,641.82 km) |
