| Isabela to Nasaud | 5,352.14 mi (8,613.44 km) |
| Isabela to Navodari | 5,602.06 mi (9,015.65 km) |
| Isabela to Negresti-Oas | 5,298.22 mi (8,526.66 km) |
| Isabela to Nehoiu | 5,473.48 mi (8,808.72 km) |
| Isabela to Ocna Mures | 5,341.65 mi (8,596.55 km) |
| Isabela to Odobesti | 5,501.23 mi (8,853.37 km) |
| Isabela to Odorheiu Secuiesc | 5,409.61 mi (8,705.92 km) |
| Isabela to Oltenita | 5,512.84 mi (8,872.06 km) |
| Isabela to Onesti | 5,478.25 mi (8,816.39 km) |
| Isabela to Oradea | 5,241.64 mi (8,435.61 km) |
| Isabela to Orastie | 5,319.57 mi (8,561.02 km) |
| Isabela to Oravita | 5,260.43 mi (8,465.84 km) |
| Isabela to Orsova | 5,299.16 mi (8,528.18 km) |
| Isabela to Otelu Rosu | 5,284.89 mi (8,505.20 km) |
| Isabela to Otopeni | 5,477.21 mi (8,814.72 km) |
