| Tallinn to Navodari | 1,056.93 mi (1,700.96 km) |
| Tallinn to Negresti-Oas | 801.05 mi (1,289.16 km) |
| Tallinn to Nehoiu | 975.27 mi (1,569.54 km) |
| Tallinn to Ocna Mures | 902.21 mi (1,451.96 km) |
| Tallinn to Odobesti | 949.40 mi (1,527.92 km) |
| Tallinn to Odorheiu Secuiesc | 907.02 mi (1,459.71 km) |
| Tallinn to Oltenita | 1,063.59 mi (1,711.68 km) |
| Tallinn to Onesti | 914.35 mi (1,471.51 km) |
| Tallinn to Oradea | 862.08 mi (1,387.38 km) |
| Tallinn to Orastie | 940.95 mi (1,514.32 km) |
| Tallinn to Oravita | 1,002.85 mi (1,613.94 km) |
| Tallinn to Orsova | 1,021.22 mi (1,643.49 km) |
| Tallinn to Otelu Rosu | 966.78 mi (1,555.88 km) |
| Tallinn to Otopeni | 1,030.10 mi (1,657.78 km) |
| Tallinn to Ovidiu | 1,060.09 mi (1,706.05 km) |
