| Olbia to Archdale (North Carolina) | 4,633.00 mi (7,456.09 km) |
| Olbia to Arden-Arcade (California) | 6,130.92 mi (9,866.77 km) |
| Olbia to Ardmore (Oklahoma) | 5,464.61 mi (8,794.43 km) |
| Olbia to Ardmore (Pennsylvania) | 4,265.50 mi (6,864.66 km) |
| Olbia to Arecibo (Puerto Rico) | 4,684.76 mi (7,539.39 km) |
| Olbia to Arkadelphia (Arkansas) | 5,294.51 mi (8,520.69 km) |
| Olbia to Arkansas City (Kansas) | 5,327.30 mi (8,573.45 km) |
| Olbia to Arlington (Tennessee) | 5,095.82 mi (8,200.93 km) |
| Olbia to Arlington (Texas) | 5,534.49 mi (8,906.91 km) |
| Olbia to Arlington (Virginia) | 4,388.40 mi (7,062.45 km) |
| Olbia to Arlington (Washington) | 5,609.75 mi (9,028.02 km) |
| Olbia to Arlington Heights (Illinois) | 4,734.83 mi (7,619.98 km) |
| Olbia to Arnold (Maryland) | 4,354.90 mi (7,008.54 km) |
| Olbia to Arnold (Missouri) | 4,988.98 mi (8,028.98 km) |
| Olbia to Arroyo Grande (California) | 6,302.13 mi (10,142.30 km) |
