| Thornton Heath to Nasaud | 1,133.80 mi (1,824.67 km) |
| Thornton Heath to Navodari | 1,407.48 mi (2,265.12 km) |
| Thornton Heath to Negresti-Oas | 1,075.90 mi (1,731.50 km) |
| Thornton Heath to Nehoiu | 1,273.93 mi (2,050.20 km) |
| Thornton Heath to Ocna Mures | 1,136.52 mi (1,829.04 km) |
| Thornton Heath to Odobesti | 1,293.04 mi (2,080.95 km) |
| Thornton Heath to Odorheiu Secuiesc | 1,200.44 mi (1,931.93 km) |
| Thornton Heath to Oltenita | 1,332.05 mi (2,143.72 km) |
| Thornton Heath to Onesti | 1,265.00 mi (2,035.82 km) |
| Thornton Heath to Oradea | 1,033.34 mi (1,663.00 km) |
| Thornton Heath to Orastie | 1,125.64 mi (1,811.54 km) |
| Thornton Heath to Oravita | 1,089.94 mi (1,754.09 km) |
| Thornton Heath to Orsova | 1,130.99 mi (1,820.15 km) |
| Thornton Heath to Otelu Rosu | 1,101.01 mi (1,771.90 km) |
| Thornton Heath to Otopeni | 1,291.48 mi (2,078.44 km) |
