| Montclair to Nasaud | 6,344.41 mi (10,210.34 km) |
| Montclair to Navodari | 6,621.63 mi (10,656.48 km) |
| Montclair to Negresti-Oas | 6,286.12 mi (10,116.54 km) |
| Montclair to Nehoiu | 6,505.17 mi (10,469.05 km) |
| Montclair to Ocna Mures | 6,384.18 mi (10,274.35 km) |
| Montclair to Odobesti | 6,497.97 mi (10,457.48 km) |
| Montclair to Odorheiu Secuiesc | 6,423.59 mi (10,337.77 km) |
| Montclair to Oltenita | 6,589.53 mi (10,604.83 km) |
| Montclair to Onesti | 6,461.31 mi (10,398.47 km) |
| Montclair to Oradea | 6,295.79 mi (10,132.09 km) |
| Montclair to Orastie | 6,399.65 mi (10,299.25 km) |
| Montclair to Oravita | 6,408.02 mi (10,312.71 km) |
| Montclair to Orsova | 6,445.05 mi (10,372.30 km) |
| Montclair to Otelu Rosu | 6,397.52 mi (10,295.82 km) |
| Montclair to Otopeni | 6,547.92 mi (10,537.86 km) |
