| Merrillville to Nasaud | 5,018.74 mi (8,076.87 km) |
| Merrillville to Navodari | 5,306.64 mi (8,540.21 km) |
| Merrillville to Negresti-Oas | 4,957.62 mi (7,978.52 km) |
| Merrillville to Nehoiu | 5,176.49 mi (8,330.76 km) |
| Merrillville to Ocna Mures | 5,042.06 mi (8,114.41 km) |
| Merrillville to Odobesti | 5,182.45 mi (8,340.34 km) |
| Merrillville to Odorheiu Secuiesc | 5,095.56 mi (8,200.51 km) |
| Merrillville to Oltenita | 5,249.79 mi (8,448.72 km) |
| Merrillville to Onesti | 5,148.34 mi (8,285.45 km) |
| Merrillville to Oradea | 4,942.48 mi (7,954.15 km) |
| Merrillville to Orastie | 5,044.32 mi (8,118.05 km) |
| Merrillville to Oravita | 5,027.92 mi (8,091.65 km) |
| Merrillville to Orsova | 5,068.29 mi (8,156.63 km) |
| Merrillville to Otelu Rosu | 5,029.71 mi (8,094.54 km) |
| Merrillville to Otopeni | 5,207.35 mi (8,380.42 km) |
