| Olbia to Columbia (Illinois) | 4,981.08 mi (8,016.27 km) |
| Olbia to Columbia (Maryland) | 4,365.51 mi (7,025.60 km) |
| Olbia to Columbia (Missouri) | 5,048.41 mi (8,124.63 km) |
| Olbia to Columbia (Pennsylvania) | 4,318.46 mi (6,949.88 km) |
| Olbia to Columbia (South Carolina) | 4,751.19 mi (7,646.30 km) |
| Olbia to Columbia (Tennessee) | 4,964.63 mi (7,989.80 km) |
| Olbia to Columbia Heights (Minnesota) | 4,820.94 mi (7,758.56 km) |
| Olbia to Columbine (Colorado) | 5,521.05 mi (8,885.27 km) |
| Olbia to Columbus (Georgia) | 4,998.19 mi (8,043.82 km) |
| Olbia to Columbus (Indiana) | 4,765.82 mi (7,669.85 km) |
| Olbia to Columbus (Mississippi) | 5,116.04 mi (8,233.47 km) |
| Olbia to Columbus (Nebraska) | 5,139.50 mi (8,271.23 km) |
| Olbia to Columbus (Ohio) | 4,607.55 mi (7,415.14 km) |
| Olbia to Commack (New York) | 4,144.89 mi (6,670.56 km) |
| Olbia to Commerce (California) | 6,283.68 mi (10,112.61 km) |
