| Assen to Navodari | 1,164.23 mi (1,873.64 km) |
| Assen to Negresti-Oas | 819.58 mi (1,318.99 km) |
| Assen to Nehoiu | 1,031.30 mi (1,659.72 km) |
| Assen to Ocna Mures | 894.36 mi (1,439.34 km) |
| Assen to Odobesti | 1,043.57 mi (1,679.46 km) |
| Assen to Odorheiu Secuiesc | 952.83 mi (1,533.43 km) |
| Assen to Oltenita | 1,099.56 mi (1,769.57 km) |
| Assen to Onesti | 1,012.25 mi (1,629.05 km) |
| Assen to Oradea | 792.63 mi (1,275.61 km) |
| Assen to Orastie | 892.68 mi (1,436.63 km) |
| Assen to Oravita | 875.46 mi (1,408.91 km) |
| Assen to Orsova | 915.56 mi (1,473.46 km) |
| Assen to Otelu Rosu | 876.61 mi (1,410.77 km) |
| Assen to Otopeni | 1,057.44 mi (1,701.79 km) |
| Assen to Ovidiu | 1,164.39 mi (1,873.91 km) |
