| Trentham to Nasaud | 1,233.47 mi (1,985.08 km) |
| Trentham to Navodari | 1,512.97 mi (2,434.90 km) |
| Trentham to Negresti-Oas | 1,174.10 mi (1,889.53 km) |
| Trentham to Nehoiu | 1,379.32 mi (2,219.79 km) |
| Trentham to Ocna Mures | 1,241.61 mi (1,998.17 km) |
| Trentham to Odobesti | 1,395.35 mi (2,245.60 km) |
| Trentham to Odorheiu Secuiesc | 1,303.34 mi (2,097.52 km) |
| Trentham to Oltenita | 1,441.80 mi (2,320.36 km) |
| Trentham to Onesti | 1,365.63 mi (2,197.76 km) |
| Trentham to Oradea | 1,138.56 mi (1,832.34 km) |
| Trentham to Orastie | 1,234.43 mi (1,986.62 km) |
| Trentham to Oravita | 1,205.01 mi (1,939.27 km) |
| Trentham to Orsova | 1,245.96 mi (2,005.18 km) |
| Trentham to Otelu Rosu | 1,212.83 mi (1,951.85 km) |
| Trentham to Otopeni | 1,400.50 mi (2,253.88 km) |
