| Houghton le Spring to Nasaud | 1,229.57 mi (1,978.81 km) |
| Houghton le Spring to Navodari | 1,514.55 mi (2,437.43 km) |
| Houghton le Spring to Negresti-Oas | 1,168.94 mi (1,881.23 km) |
| Houghton le Spring to Nehoiu | 1,381.75 mi (2,223.71 km) |
| Houghton le Spring to Ocna Mures | 1,244.89 mi (2,003.46 km) |
| Houghton le Spring to Odobesti | 1,393.43 mi (2,242.51 km) |
| Houghton le Spring to Odorheiu Secuiesc | 1,303.02 mi (2,097.01 km) |
| Houghton le Spring to Oltenita | 1,450.02 mi (2,333.59 km) |
| Houghton le Spring to Onesti | 1,361.71 mi (2,191.46 km) |
| Houghton le Spring to Oradea | 1,143.17 mi (1,839.75 km) |
| Houghton le Spring to Orastie | 1,243.01 mi (2,000.43 km) |
| Houghton le Spring to Oravita | 1,223.33 mi (1,968.76 km) |
| Houghton le Spring to Orsova | 1,263.75 mi (2,033.81 km) |
| Houghton le Spring to Otelu Rosu | 1,226.08 mi (1,973.18 km) |
| Houghton le Spring to Otopeni | 1,407.94 mi (2,265.85 km) |
