| Houma to Nasaud | 5,772.86 mi (9,290.53 km) |
| Houma to Navodari | 6,059.12 mi (9,751.21 km) |
| Houma to Negresti-Oas | 5,711.90 mi (9,192.42 km) |
| Houma to Nehoiu | 5,926.61 mi (9,537.95 km) |
| Houma to Ocna Mures | 5,789.86 mi (9,317.88 km) |
| Houma to Odobesti | 5,937.04 mi (9,554.75 km) |
| Houma to Odorheiu Secuiesc | 5,847.42 mi (9,410.52 km) |
| Houma to Oltenita | 5,994.49 mi (9,647.20 km) |
| Houma to Onesti | 5,904.44 mi (9,502.28 km) |
| Houma to Oradea | 5,688.05 mi (9,154.03 km) |
| Houma to Orastie | 5,787.15 mi (9,313.52 km) |
| Houma to Oravita | 5,761.28 mi (9,271.88 km) |
| Houma to Orsova | 5,802.21 mi (9,337.76 km) |
| Houma to Otelu Rosu | 5,767.98 mi (9,282.67 km) |
| Houma to Otopeni | 5,952.56 mi (9,579.73 km) |
