| East Chicago to Opwijk | 4,133.02 mi (6,651.45 km) |
| East Chicago to Ostend | 4,076.53 mi (6,560.54 km) |
| East Chicago to Oud-Heverlee | 4,155.85 mi (6,688.19 km) |
| East Chicago to Oud-Turnhout | 4,150.71 mi (6,679.92 km) |
| East Chicago to Oudenaarde | 4,115.07 mi (6,622.56 km) |
| East Chicago to Oudenburg | 4,081.01 mi (6,567.75 km) |
| East Chicago to Oupeye | 4,196.90 mi (6,754.25 km) |
| East Chicago to Overijse | 4,152.59 mi (6,682.95 km) |
| East Chicago to Overpelt | 4,170.35 mi (6,711.53 km) |
| East Chicago to Paal | 4,167.55 mi (6,707.02 km) |
| East Chicago to Peer | 4,174.70 mi (6,718.52 km) |
| East Chicago to Pepinster | 4,208.48 mi (6,772.89 km) |
| East Chicago to Peruwelz | 4,125.95 mi (6,640.08 km) |
| East Chicago to Perwez | 4,168.80 mi (6,709.04 km) |
| East Chicago to Philippeville | 4,173.78 mi (6,717.05 km) |
