| Olbia to Robertsville (New Jersey) | 4,208.25 mi (6,772.52 km) |
| Olbia to Robinson (Texas) | 5,592.91 mi (9,000.93 km) |
| Olbia to Robstown (Texas) | 5,789.73 mi (9,317.67 km) |
| Olbia to Rochester (Michigan) | 4,508.31 mi (7,255.42 km) |
| Olbia to Rochester (Minnesota) | 4,835.28 mi (7,781.63 km) |
| Olbia to Rochester (New Hampshire) | 3,959.48 mi (6,372.17 km) |
| Olbia to Rochester (New York) | 4,255.30 mi (6,848.24 km) |
| Olbia to Rochester Hills (Michigan) | 4,510.70 mi (7,259.27 km) |
| Olbia to Rock Hill (South Carolina) | 4,720.31 mi (7,596.61 km) |
| Olbia to Rock Island (Illinois) | 4,867.73 mi (7,833.85 km) |
| Olbia to Rock Springs (Wyoming) | 5,569.30 mi (8,962.92 km) |
| Olbia to Rockford (Illinois) | 4,772.51 mi (7,680.61 km) |
| Olbia to Rockledge (Florida) | 4,979.06 mi (8,013.02 km) |
| Olbia to Rocklin (California) | 6,115.08 mi (9,841.27 km) |
| Olbia to Rockport (Texas) | 5,752.06 mi (9,257.05 km) |
