| Usingen to Navodari | 1,023.71 mi (1,647.51 km) |
| Usingen to Negresti-Oas | 693.32 mi (1,115.79 km) |
| Usingen to Nehoiu | 890.12 mi (1,432.51 km) |
| Usingen to Ocna Mures | 752.64 mi (1,211.26 km) |
| Usingen to Odobesti | 909.20 mi (1,463.22 km) |
| Usingen to Odorheiu Secuiesc | 816.58 mi (1,314.15 km) |
| Usingen to Oltenita | 949.49 mi (1,528.05 km) |
| Usingen to Onesti | 881.41 mi (1,418.50 km) |
| Usingen to Oradea | 649.45 mi (1,045.19 km) |
| Usingen to Orastie | 742.56 mi (1,195.03 km) |
| Usingen to Oravita | 711.08 mi (1,144.38 km) |
| Usingen to Orsova | 752.04 mi (1,210.29 km) |
| Usingen to Otelu Rosu | 719.45 mi (1,157.85 km) |
| Usingen to Otopeni | 908.59 mi (1,462.23 km) |
| Usingen to Ovidiu | 1,023.28 mi (1,646.82 km) |
