| Nideggen to Navodari | 1,117.42 mi (1,798.32 km) |
| Nideggen to Negresti-Oas | 786.24 mi (1,265.33 km) |
| Nideggen to Nehoiu | 983.83 mi (1,583.32 km) |
| Nideggen to Ocna Mures | 846.34 mi (1,362.05 km) |
| Nideggen to Odobesti | 1,002.77 mi (1,613.81 km) |
| Nideggen to Odorheiu Secuiesc | 910.17 mi (1,464.78 km) |
| Nideggen to Oltenita | 1,043.03 mi (1,678.59 km) |
| Nideggen to Onesti | 974.82 mi (1,568.83 km) |
| Nideggen to Oradea | 743.14 mi (1,195.98 km) |
| Nideggen to Orastie | 836.19 mi (1,345.71 km) |
| Nideggen to Oravita | 803.67 mi (1,293.38 km) |
| Nideggen to Orsova | 844.67 mi (1,359.36 km) |
| Nideggen to Otelu Rosu | 812.74 mi (1,307.98 km) |
| Nideggen to Otopeni | 1,002.19 mi (1,612.87 km) |
| Nideggen to Ovidiu | 1,117.00 mi (1,797.63 km) |
