| Alzey to Navodari | 1,031.42 mi (1,659.91 km) |
| Alzey to Negresti-Oas | 707.27 mi (1,138.25 km) |
| Alzey to Nehoiu | 898.20 mi (1,445.52 km) |
| Alzey to Ocna Mures | 761.36 mi (1,225.29 km) |
| Alzey to Odobesti | 919.34 mi (1,479.54 km) |
| Alzey to Odorheiu Secuiesc | 826.64 mi (1,330.34 km) |
| Alzey to Oltenita | 954.29 mi (1,535.78 km) |
| Alzey to Onesti | 892.77 mi (1,436.77 km) |
| Alzey to Oradea | 658.51 mi (1,059.76 km) |
| Alzey to Orastie | 748.47 mi (1,204.54 km) |
| Alzey to Oravita | 711.70 mi (1,145.37 km) |
| Alzey to Orsova | 752.75 mi (1,211.43 km) |
| Alzey to Otelu Rosu | 722.91 mi (1,163.42 km) |
| Alzey to Otopeni | 914.00 mi (1,470.94 km) |
| Alzey to Ovidiu | 1,030.80 mi (1,658.91 km) |
