| Houma to Noventa Vicentina | 5,335.99 mi (8,587.45 km) |
| Houma to Novi di Modena | 5,322.22 mi (8,565.28 km) |
| Houma to Novi Ligure | 5,235.45 mi (8,425.64 km) |
| Houma to Nuoro | 5,405.93 mi (8,700.00 km) |
| Houma to Occhiobello | 5,350.31 mi (8,610.48 km) |
| Houma to Oderzo | 5,359.37 mi (8,625.07 km) |
| Houma to Oggiono | 5,226.69 mi (8,411.55 km) |
| Houma to Olbia | 5,393.49 mi (8,679.98 km) |
| Houma to Oleggio | 5,201.95 mi (8,371.72 km) |
| Houma to Olgiate Comasco | 5,210.35 mi (8,385.25 km) |
| Houma to Olgiate Olona | 5,211.59 mi (8,387.25 km) |
| Houma to Omegna | 5,183.42 mi (8,341.90 km) |
| Houma to Opera | 5,233.92 mi (8,423.19 km) |
| Houma to Oppeano | 5,320.59 mi (8,562.66 km) |
| Houma to Orbassano | 5,173.27 mi (8,325.58 km) |
