| Olbia to Troy (Michigan) | 4,513.44 mi (7,263.67 km) |
| Olbia to Troy (Missouri) | 4,990.82 mi (8,031.95 km) |
| Olbia to Troy (New York) | 4,097.79 mi (6,594.75 km) |
| Olbia to Troy (Ohio) | 4,658.74 mi (7,497.51 km) |
| Olbia to Truckee (California) | 6,051.77 mi (9,739.39 km) |
| Olbia to Trujillo Alto (Puerto Rico) | 4,650.61 mi (7,484.44 km) |
| Olbia to Trumbull Center (Connecticut) | 4,126.68 mi (6,641.24 km) |
| Olbia to Trussville (Alabama) | 5,028.01 mi (8,091.81 km) |
| Olbia to Tualatin (Oregon) | 5,785.63 mi (9,311.08 km) |
| Olbia to Tuckahoe (Virginia) | 4,458.96 mi (7,176.00 km) |
| Olbia to Tucker (Georgia) | 4,911.19 mi (7,903.80 km) |
| Olbia to Tucson (Arizona) | 6,119.28 mi (9,848.03 km) |
| Olbia to Tucson Estates (Arizona) | 6,127.41 mi (9,861.11 km) |
| Olbia to Tucson Mountains (Arizona) | 6,120.13 mi (9,849.40 km) |
| Olbia to Tukwila (Washington) | 5,652.60 mi (9,096.98 km) |
