| Bad Frankenhausen to Navodari | 942.96 mi (1,517.54 km) |
| Bad Frankenhausen to Negresti-Oas | 601.02 mi (967.25 km) |
| Bad Frankenhausen to Nehoiu | 809.68 mi (1,303.05 km) |
| Bad Frankenhausen to Ocna Mures | 672.38 mi (1,082.09 km) |
| Bad Frankenhausen to Odobesti | 823.49 mi (1,325.27 km) |
| Bad Frankenhausen to Odorheiu Secuiesc | 732.07 mi (1,178.15 km) |
| Bad Frankenhausen to Oltenita | 876.77 mi (1,411.02 km) |
| Bad Frankenhausen to Onesti | 793.04 mi (1,276.28 km) |
| Bad Frankenhausen to Oradea | 570.19 mi (917.64 km) |
| Bad Frankenhausen to Orastie | 669.71 mi (1,077.80 km) |
| Bad Frankenhausen to Oravita | 653.07 mi (1,051.01 km) |
| Bad Frankenhausen to Orsova | 692.98 mi (1,115.24 km) |
| Bad Frankenhausen to Otelu Rosu | 653.52 mi (1,051.74 km) |
| Bad Frankenhausen to Otopeni | 834.73 mi (1,343.37 km) |
| Bad Frankenhausen to Ovidiu | 943.00 mi (1,517.61 km) |
