| Alcala la Real to Nasaud | 1,585.79 mi (2,552.09 km) |
| Alcala la Real to Navodari | 1,751.52 mi (2,818.80 km) |
| Alcala la Real to Negresti-Oas | 1,553.16 mi (2,499.57 km) |
| Alcala la Real to Nehoiu | 1,647.20 mi (2,650.92 km) |
| Alcala la Real to Ocna Mures | 1,545.52 mi (2,487.28 km) |
| Alcala la Real to Odobesti | 1,687.96 mi (2,716.52 km) |
| Alcala la Real to Odorheiu Secuiesc | 1,611.45 mi (2,593.37 km) |
| Alcala la Real to Oltenita | 1,652.59 mi (2,659.59 km) |
| Alcala la Real to Onesti | 1,679.50 mi (2,702.89 km) |
| Alcala la Real to Oradea | 1,469.64 mi (2,365.16 km) |
| Alcala la Real to Orastie | 1,506.19 mi (2,423.98 km) |
| Alcala la Real to Oravita | 1,422.18 mi (2,288.78 km) |
| Alcala la Real to Orsova | 1,451.77 mi (2,336.40 km) |
| Alcala la Real to Otelu Rosu | 1,461.18 mi (2,351.55 km) |
| Alcala la Real to Otopeni | 1,628.24 mi (2,620.40 km) |
