| Olbia to Red Bank (New Jersey) | 4,197.68 mi (6,755.51 km) |
| Olbia to Red Bank (Tennessee) | 4,907.88 mi (7,898.46 km) |
| Olbia to Red Bluff (California) | 6,067.51 mi (9,764.72 km) |
| Olbia to Red Hill (South Carolina) | 4,673.32 mi (7,520.98 km) |
| Olbia to Red Oak (Texas) | 5,528.36 mi (8,897.03 km) |
| Olbia to Red Wing (Minnesota) | 4,816.04 mi (7,750.67 km) |
| Olbia to Redan (Georgia) | 4,913.80 mi (7,908.00 km) |
| Olbia to Redding (California) | 6,048.57 mi (9,734.23 km) |
| Olbia to Redland (Maryland) | 4,380.97 mi (7,050.48 km) |
| Olbia to Redlands (California) | 6,246.83 mi (10,053.31 km) |
| Olbia to Redmond (Oregon) | 5,804.54 mi (9,341.51 km) |
| Olbia to Redmond (Washington) | 5,637.03 mi (9,071.93 km) |
| Olbia to Redondo Beach (California) | 6,299.06 mi (10,137.35 km) |
| Olbia to Redwood City (California) | 6,219.41 mi (10,009.18 km) |
| Olbia to Reedley (California) | 6,182.22 mi (9,949.31 km) |
