| Indianapolis to Opwijk | 4,172.03 mi (6,714.24 km) |
| Indianapolis to Ostend | 4,115.11 mi (6,622.63 km) |
| Indianapolis to Oud-Heverlee | 4,194.96 mi (6,751.13 km) |
| Indianapolis to Oud-Turnhout | 4,191.28 mi (6,745.22 km) |
| Indianapolis to Oudenaarde | 4,153.29 mi (6,684.07 km) |
| Indianapolis to Oudenburg | 4,119.55 mi (6,629.78 km) |
| Indianapolis to Oupeye | 4,236.56 mi (6,818.09 km) |
| Indianapolis to Overijse | 4,191.46 mi (6,745.50 km) |
| Indianapolis to Overpelt | 4,211.05 mi (6,777.04 km) |
| Indianapolis to Paal | 4,207.60 mi (6,771.48 km) |
| Indianapolis to Peer | 4,215.23 mi (6,783.75 km) |
| Indianapolis to Pepinster | 4,247.95 mi (6,836.42 km) |
| Indianapolis to Peruwelz | 4,163.33 mi (6,700.23 km) |
| Indianapolis to Perwez | 4,207.53 mi (6,771.36 km) |
| Indianapolis to Philippeville | 4,211.22 mi (6,777.31 km) |
