| Diekirch to Navodari | 1,118.53 mi (1,800.09 km) |
| Diekirch to Negresti-Oas | 794.98 mi (1,279.40 km) |
| Diekirch to Nehoiu | 985.43 mi (1,585.89 km) |
| Diekirch to Ocna Mures | 848.75 mi (1,365.93 km) |
| Diekirch to Odobesti | 1,006.90 mi (1,620.45 km) |
| Diekirch to Odorheiu Secuiesc | 914.20 mi (1,471.26 km) |
| Diekirch to Oltenita | 1,040.59 mi (1,674.67 km) |
| Diekirch to Onesti | 980.45 mi (1,577.88 km) |
| Diekirch to Oradea | 745.98 mi (1,200.54 km) |
| Diekirch to Orastie | 835.23 mi (1,344.17 km) |
| Diekirch to Oravita | 796.51 mi (1,281.86 km) |
| Diekirch to Orsova | 837.54 mi (1,347.89 km) |
| Diekirch to Otelu Rosu | 808.91 mi (1,301.81 km) |
| Diekirch to Otopeni | 1,000.52 mi (1,610.19 km) |
| Diekirch to Ovidiu | 1,117.86 mi (1,799.02 km) |
