| Mannheim to Navodari | 1,012.06 mi (1,628.75 km) |
| Mannheim to Negresti-Oas | 690.31 mi (1,110.95 km) |
| Mannheim to Nehoiu | 879.02 mi (1,414.64 km) |
| Mannheim to Ocna Mures | 742.47 mi (1,194.89 km) |
| Mannheim to Odobesti | 900.83 mi (1,449.74 km) |
| Mannheim to Odorheiu Secuiesc | 808.15 mi (1,300.59 km) |
| Mannheim to Oltenita | 934.09 mi (1,503.27 km) |
| Mannheim to Onesti | 874.69 mi (1,407.68 km) |
| Mannheim to Oradea | 639.81 mi (1,029.68 km) |
| Mannheim to Orastie | 728.70 mi (1,172.73 km) |
| Mannheim to Oravita | 690.52 mi (1,111.29 km) |
| Mannheim to Orsova | 731.56 mi (1,177.33 km) |
| Mannheim to Otelu Rosu | 702.46 mi (1,130.50 km) |
| Mannheim to Otopeni | 893.99 mi (1,438.74 km) |
| Mannheim to Ovidiu | 1,011.38 mi (1,627.66 km) |
