| Houma to Opole | 5,398.47 mi (8,687.99 km) |
| Houma to Orzesze | 5,448.07 mi (8,767.81 km) |
| Houma to Osowa | 5,277.97 mi (8,494.07 km) |
| Houma to Ostroda | 5,356.19 mi (8,619.96 km) |
| Houma to Ostroleka | 5,435.32 mi (8,747.30 km) |
| Houma to Ostrow Mazowiecka | 5,457.26 mi (8,782.61 km) |
| Houma to Ostrow Wielkopolski | 5,357.70 mi (8,622.39 km) |
| Houma to Ostrowiec Swietokrzyski | 5,513.94 mi (8,873.83 km) |
| Houma to Ostrzeszow | 5,370.57 mi (8,643.09 km) |
| Houma to Oswiecim | 5,469.76 mi (8,802.73 km) |
| Houma to Otwock | 5,462.45 mi (8,790.96 km) |
| Houma to Ozarow Mazowiecki | 5,442.24 mi (8,758.44 km) |
| Houma to Ozimek | 5,408.53 mi (8,704.19 km) |
| Houma to Ozorkow | 5,398.43 mi (8,687.93 km) |
| Houma to Pabianice | 5,414.05 mi (8,713.07 km) |
