| Balma to Navodari | 1,343.16 mi (2,161.61 km) |
| Balma to Negresti-Oas | 1,093.29 mi (1,759.48 km) |
| Balma to Nehoiu | 1,223.89 mi (1,969.66 km) |
| Balma to Ocna Mures | 1,105.39 mi (1,778.95 km) |
| Balma to Odobesti | 1,259.29 mi (2,026.63 km) |
| Balma to Odorheiu Secuiesc | 1,174.02 mi (1,889.40 km) |
| Balma to Oltenita | 1,248.14 mi (2,008.70 km) |
| Balma to Onesti | 1,244.09 mi (2,002.17 km) |
| Balma to Oradea | 1,017.05 mi (1,636.78 km) |
| Balma to Orastie | 1,073.01 mi (1,726.84 km) |
| Balma to Oravita | 1,000.05 mi (1,609.43 km) |
| Balma to Orsova | 1,035.70 mi (1,666.80 km) |
| Balma to Otelu Rosu | 1,032.04 mi (1,660.91 km) |
| Balma to Otopeni | 1,216.71 mi (1,958.10 km) |
| Balma to Ovidiu | 1,341.01 mi (2,158.15 km) |
