| Olbia to Odessa (Texas) | 5,793.40 mi (9,323.58 km) |
| Olbia to Ogden (Utah) | 5,682.43 mi (9,144.99 km) |
| Olbia to Oildale (California) | 6,233.77 mi (10,032.28 km) |
| Olbia to Ojus (Florida) | 5,050.76 mi (8,128.42 km) |
| Olbia to Okemos (Michigan) | 4,561.98 mi (7,341.79 km) |
| Olbia to Oklahoma City (Oklahoma) | 5,421.44 mi (8,724.97 km) |
| Olbia to Okmulgee (Oklahoma) | 5,351.85 mi (8,612.97 km) |
| Olbia to Olathe (Kansas) | 5,153.97 mi (8,294.51 km) |
| Olbia to Old Jamestown (Missouri) | 4,967.61 mi (7,994.60 km) |
| Olbia to Oldsmar (Florida) | 5,083.59 mi (8,181.25 km) |
| Olbia to Olean (New York) | 4,329.75 mi (6,968.07 km) |
| Olbia to Olive Branch (Mississippi) | 5,116.67 mi (8,234.48 km) |
| Olbia to Olivehurst (California) | 6,109.10 mi (9,831.65 km) |
| Olbia to Olney (Maryland) | 4,377.11 mi (7,044.28 km) |
| Olbia to Olympia (Washington) | 5,693.82 mi (9,163.32 km) |
