| Olbia to Oak Harbor (Washington) | 5,615.39 mi (9,037.09 km) |
| Olbia to Oak Hills (Oregon) | 5,778.11 mi (9,298.98 km) |
| Olbia to Oak Lawn (Illinois) | 4,740.96 mi (7,629.84 km) |
| Olbia to Oak Park (California) | 6,294.18 mi (10,129.51 km) |
| Olbia to Oak Park (Illinois) | 4,735.40 mi (7,620.89 km) |
| Olbia to Oak Park (Michigan) | 4,519.48 mi (7,273.41 km) |
| Olbia to Oak Ridge (Florida) | 5,005.48 mi (8,055.55 km) |
| Olbia to Oak Ridge (New Jersey) | 4,193.05 mi (6,748.06 km) |
| Olbia to Oak Ridge (Tennessee) | 4,827.45 mi (7,769.04 km) |
| Olbia to Oakdale (California) | 6,161.70 mi (9,916.30 km) |
| Olbia to Oakdale (Minnesota) | 4,812.67 mi (7,745.24 km) |
| Olbia to Oakland (California) | 6,202.72 mi (9,982.31 km) |
| Olbia to Oakland (New Jersey) | 4,181.56 mi (6,729.57 km) |
| Olbia to Oakland Park (Florida) | 5,040.99 mi (8,112.69 km) |
| Olbia to Oakleaf Plantation (Florida) | 4,954.19 mi (7,972.99 km) |
