| Monticello to Nasaud | 5,025.91 mi (8,088.41 km) |
| Monticello to Navodari | 5,312.40 mi (8,549.48 km) |
| Monticello to Negresti-Oas | 4,965.33 mi (7,990.92 km) |
| Monticello to Nehoiu | 5,186.35 mi (8,346.63 km) |
| Monticello to Ocna Mures | 5,056.01 mi (8,136.87 km) |
| Monticello to Odobesti | 5,187.22 mi (8,348.02 km) |
| Monticello to Odorheiu Secuiesc | 5,104.40 mi (8,214.74 km) |
| Monticello to Oltenita | 5,264.72 mi (8,472.75 km) |
| Monticello to Onesti | 5,151.78 mi (8,291.00 km) |
| Monticello to Oradea | 4,960.05 mi (7,982.43 km) |
| Monticello to Orastie | 5,063.65 mi (8,149.16 km) |
| Monticello to Oravita | 5,057.36 mi (8,139.04 km) |
| Monticello to Orsova | 5,096.68 mi (8,202.32 km) |
| Monticello to Otelu Rosu | 5,054.05 mi (8,133.70 km) |
| Monticello to Otopeni | 5,222.22 mi (8,404.35 km) |
