| Altensteig to Navodari | 993.63 mi (1,599.10 km) |
| Altensteig to Negresti-Oas | 682.83 mi (1,098.90 km) |
| Altensteig to Nehoiu | 861.73 mi (1,386.81 km) |
| Altensteig to Ocna Mures | 726.93 mi (1,169.88 km) |
| Altensteig to Odobesti | 886.34 mi (1,426.42 km) |
| Altensteig to Odorheiu Secuiesc | 794.08 mi (1,277.94 km) |
| Altensteig to Oltenita | 912.00 mi (1,467.72 km) |
| Altensteig to Onesti | 862.08 mi (1,387.39 km) |
| Altensteig to Oradea | 625.64 mi (1,006.88 km) |
| Altensteig to Orastie | 709.31 mi (1,141.52 km) |
| Altensteig to Oravita | 664.22 mi (1,068.95 km) |
| Altensteig to Orsova | 705.08 mi (1,134.72 km) |
| Altensteig to Otelu Rosu | 679.90 mi (1,094.19 km) |
| Altensteig to Otopeni | 872.92 mi (1,404.83 km) |
| Altensteig to Ovidiu | 992.69 mi (1,597.59 km) |
