| Olbia to Oakley (California) | 6,175.09 mi (9,937.84 km) |
| Olbia to Oakton (Virginia) | 4,397.11 mi (7,076.46 km) |
| Olbia to Oakville (Missouri) | 4,985.93 mi (8,024.08 km) |
| Olbia to Oatfield (Oregon) | 5,778.68 mi (9,299.88 km) |
| Olbia to Ocala (Florida) | 5,010.95 mi (8,064.35 km) |
| Olbia to Ocean Acres (New Jersey) | 4,228.77 mi (6,805.56 km) |
| Olbia to Ocean City (New Jersey) | 4,260.42 mi (6,856.49 km) |
| Olbia to Ocean Pines (Maryland) | 4,317.49 mi (6,948.34 km) |
| Olbia to Ocean Pointe (Hawaii) | 8,063.08 mi (12,976.27 km) |
| Olbia to Ocean Springs (Mississippi) | 5,268.75 mi (8,479.24 km) |
| Olbia to Oceanside (California) | 6,297.05 mi (10,134.13 km) |
| Olbia to Oceanside (New York) | 4,168.19 mi (6,708.05 km) |
| Olbia to Ocoee (Florida) | 5,006.57 mi (8,057.30 km) |
| Olbia to Oconomowoc (Wisconsin) | 4,714.70 mi (7,587.57 km) |
| Olbia to Odenton (Maryland) | 4,362.98 mi (7,021.55 km) |
