| Indiana to Opwijk | 3,859.70 mi (6,211.59 km) |
| Indiana to Ostend | 3,802.31 mi (6,119.23 km) |
| Indiana to Oud-Heverlee | 3,882.69 mi (6,248.59 km) |
| Indiana to Oud-Turnhout | 3,881.22 mi (6,246.22 km) |
| Indiana to Oudenaarde | 3,839.84 mi (6,179.62 km) |
| Indiana to Oudenburg | 3,806.68 mi (6,126.26 km) |
| Indiana to Oupeye | 3,924.99 mi (6,316.67 km) |
| Indiana to Overijse | 3,878.85 mi (6,242.40 km) |
| Indiana to Overpelt | 3,901.13 mi (6,278.26 km) |
| Indiana to Paal | 3,896.71 mi (6,271.15 km) |
| Indiana to Peer | 3,905.03 mi (6,284.54 km) |
| Indiana to Pepinster | 3,936.07 mi (6,334.50 km) |
| Indiana to Peruwelz | 3,848.61 mi (6,193.74 km) |
| Indiana to Perwez | 3,894.65 mi (6,267.84 km) |
| Indiana to Philippeville | 3,896.47 mi (6,270.76 km) |
