| Calera to Nasaud | 5,435.39 mi (8,747.42 km) |
| Calera to Navodari | 5,721.44 mi (9,207.77 km) |
| Calera to Negresti-Oas | 5,374.46 mi (8,649.36 km) |
| Calera to Nehoiu | 5,588.83 mi (8,994.35 km) |
| Calera to Ocna Mures | 5,452.00 mi (8,774.15 km) |
| Calera to Odobesti | 5,599.55 mi (9,011.60 km) |
| Calera to Odorheiu Secuiesc | 5,509.78 mi (8,867.13 km) |
| Calera to Oltenita | 5,656.43 mi (9,103.14 km) |
| Calera to Onesti | 5,567.06 mi (8,959.32 km) |
| Calera to Oradea | 5,350.10 mi (8,610.15 km) |
| Calera to Orastie | 5,449.05 mi (8,769.40 km) |
| Calera to Oravita | 5,422.89 mi (8,727.30 km) |
| Calera to Orsova | 5,463.83 mi (8,793.18 km) |
| Calera to Otelu Rosu | 5,429.73 mi (8,738.30 km) |
| Calera to Otopeni | 5,614.53 mi (9,035.71 km) |
