| Herenthout to Navodari | 1,197.54 mi (1,927.25 km) |
| Herenthout to Negresti-Oas | 864.55 mi (1,391.36 km) |
| Herenthout to Nehoiu | 1,063.89 mi (1,712.17 km) |
| Herenthout to Ocna Mures | 926.31 mi (1,490.76 km) |
| Herenthout to Odobesti | 1,082.26 mi (1,741.74 km) |
| Herenthout to Odorheiu Secuiesc | 989.74 mi (1,592.83 km) |
| Herenthout to Oltenita | 1,123.70 mi (1,808.42 km) |
| Herenthout to Onesti | 1,053.93 mi (1,696.14 km) |
| Herenthout to Oradea | 823.10 mi (1,324.66 km) |
| Herenthout to Orastie | 916.73 mi (1,475.34 km) |
| Herenthout to Oravita | 884.63 mi (1,423.68 km) |
| Herenthout to Orsova | 925.63 mi (1,489.66 km) |
| Herenthout to Otelu Rosu | 893.59 mi (1,438.09 km) |
| Herenthout to Otopeni | 1,082.78 mi (1,742.56 km) |
| Herenthout to Ovidiu | 1,197.15 mi (1,926.63 km) |
