| Efringen-Kirchen to Navodari | 1,032.88 mi (1,662.26 km) |
| Efringen-Kirchen to Negresti-Oas | 735.40 mi (1,183.50 km) |
| Efringen-Kirchen to Nehoiu | 902.94 mi (1,453.15 km) |
| Efringen-Kirchen to Ocna Mures | 771.00 mi (1,240.80 km) |
| Efringen-Kirchen to Odobesti | 930.51 mi (1,497.51 km) |
| Efringen-Kirchen to Odorheiu Secuiesc | 839.24 mi (1,350.63 km) |
| Efringen-Kirchen to Oltenita | 947.30 mi (1,524.54 km) |
| Efringen-Kirchen to Onesti | 908.39 mi (1,461.91 km) |
| Efringen-Kirchen to Oradea | 672.07 mi (1,081.59 km) |
| Efringen-Kirchen to Orastie | 749.21 mi (1,205.74 km) |
| Efringen-Kirchen to Oravita | 696.13 mi (1,120.30 km) |
| Efringen-Kirchen to Orsova | 736.36 mi (1,185.06 km) |
| Efringen-Kirchen to Otelu Rosu | 716.33 mi (1,152.82 km) |
| Efringen-Kirchen to Otopeni | 909.68 mi (1,463.99 km) |
| Efringen-Kirchen to Ovidiu | 1,031.64 mi (1,660.26 km) |
