| Humlebaek to Navodari | 1,069.17 mi (1,720.66 km) |
| Humlebaek to Negresti-Oas | 725.14 mi (1,167.00 km) |
| Humlebaek to Nehoiu | 945.93 mi (1,522.33 km) |
| Humlebaek to Ocna Mures | 821.44 mi (1,321.97 km) |
| Humlebaek to Odobesti | 943.98 mi (1,519.20 km) |
| Humlebaek to Odorheiu Secuiesc | 863.86 mi (1,390.26 km) |
| Humlebaek to Oltenita | 1,028.08 mi (1,654.54 km) |
| Humlebaek to Onesti | 908.23 mi (1,461.66 km) |
| Humlebaek to Oradea | 733.69 mi (1,180.76 km) |
| Humlebaek to Orastie | 837.19 mi (1,347.33 km) |
| Humlebaek to Oravita | 853.55 mi (1,373.66 km) |
| Humlebaek to Orsova | 888.02 mi (1,429.13 km) |
| Humlebaek to Otelu Rosu | 837.94 mi (1,348.54 km) |
| Humlebaek to Otopeni | 986.07 mi (1,586.93 km) |
| Humlebaek to Ovidiu | 1,070.51 mi (1,722.82 km) |
