| Zelzate to Navodari | 1,238.37 mi (1,992.97 km) |
| Zelzate to Negresti-Oas | 905.80 mi (1,457.75 km) |
| Zelzate to Nehoiu | 1,104.75 mi (1,777.92 km) |
| Zelzate to Ocna Mures | 967.21 mi (1,556.57 km) |
| Zelzate to Odobesti | 1,123.33 mi (1,807.82 km) |
| Zelzate to Odorheiu Secuiesc | 1,030.78 mi (1,658.88 km) |
| Zelzate to Oltenita | 1,164.12 mi (1,873.47 km) |
| Zelzate to Onesti | 1,095.08 mi (1,762.36 km) |
| Zelzate to Oradea | 864.00 mi (1,390.48 km) |
| Zelzate to Orastie | 957.28 mi (1,540.60 km) |
| Zelzate to Oravita | 924.26 mi (1,487.45 km) |
| Zelzate to Orsova | 965.28 mi (1,553.47 km) |
| Zelzate to Otelu Rosu | 933.75 mi (1,502.72 km) |
| Zelzate to Otopeni | 1,123.29 mi (1,807.76 km) |
| Zelzate to Ovidiu | 1,237.97 mi (1,992.31 km) |
