| Olbia to Cedar Rapids (Iowa) | 4,891.07 mi (7,871.41 km) |
| Olbia to Cedarburg (Wisconsin) | 4,685.99 mi (7,541.36 km) |
| Olbia to Celebration (Florida) | 5,018.79 mi (8,076.97 km) |
| Olbia to Celina (Ohio) | 4,653.16 mi (7,488.53 km) |
| Olbia to Celina (Texas) | 5,491.60 mi (8,837.87 km) |
| Olbia to Centennial (Colorado) | 5,513.30 mi (8,872.80 km) |
| Olbia to Center Point (Alabama) | 5,032.53 mi (8,099.07 km) |
| Olbia to Centereach (New York) | 4,134.94 mi (6,654.54 km) |
| Olbia to Centerton (Arkansas) | 5,246.15 mi (8,442.86 km) |
| Olbia to Centerville (Ohio) | 4,671.91 mi (7,518.71 km) |
| Olbia to Centerville (Utah) | 5,695.32 mi (9,165.74 km) |
| Olbia to Central (Louisiana) | 5,364.59 mi (8,633.47 km) |
| Olbia to Central Falls (Rhode Island) | 4,024.03 mi (6,476.06 km) |
| Olbia to Central Islip (New York) | 4,142.94 mi (6,667.42 km) |
| Olbia to Central Point (Oregon) | 5,961.12 mi (9,593.49 km) |
