| Radviliskis to Navodari | 823.75 mi (1,325.69 km) |
| Radviliskis to Negresti-Oas | 547.98 mi (881.88 km) |
| Radviliskis to Nehoiu | 731.71 mi (1,177.58 km) |
| Radviliskis to Ocna Mures | 650.31 mi (1,046.57 km) |
| Radviliskis to Odobesti | 709.81 mi (1,142.34 km) |
| Radviliskis to Odorheiu Secuiesc | 659.77 mi (1,061.80 km) |
| Radviliskis to Oltenita | 820.65 mi (1,320.72 km) |
| Radviliskis to Onesti | 673.74 mi (1,084.27 km) |
| Radviliskis to Oradea | 607.06 mi (976.96 km) |
| Radviliskis to Orastie | 687.65 mi (1,106.66 km) |
| Radviliskis to Oravita | 747.87 mi (1,203.58 km) |
| Radviliskis to Orsova | 766.85 mi (1,234.13 km) |
| Radviliskis to Otelu Rosu | 712.28 mi (1,146.30 km) |
| Radviliskis to Otopeni | 785.12 mi (1,263.53 km) |
| Radviliskis to Ovidiu | 826.55 mi (1,330.20 km) |
