| Tondela to Navodari | 1,874.24 mi (3,016.30 km) |
| Tondela to Negresti-Oas | 1,628.32 mi (2,620.53 km) |
| Tondela to Nehoiu | 1,757.41 mi (2,828.27 km) |
| Tondela to Ocna Mures | 1,640.60 mi (2,640.29 km) |
| Tondela to Odobesti | 1,793.65 mi (2,886.60 km) |
| Tondela to Odorheiu Secuiesc | 1,709.12 mi (2,750.57 km) |
| Tondela to Oltenita | 1,777.93 mi (2,861.31 km) |
| Tondela to Onesti | 1,779.13 mi (2,863.24 km) |
| Tondela to Oradea | 1,552.58 mi (2,498.64 km) |
| Tondela to Orastie | 1,607.49 mi (2,587.01 km) |
| Tondela to Oravita | 1,532.54 mi (2,466.38 km) |
| Tondela to Orsova | 1,567.12 mi (2,522.04 km) |
| Tondela to Otelu Rosu | 1,565.86 mi (2,520.00 km) |
| Tondela to Otopeni | 1,747.99 mi (2,813.11 km) |
| Tondela to Ovidiu | 1,871.92 mi (3,012.56 km) |
