| Olbia to Rosemont (California) | 6,133.08 mi (9,870.24 km) |
| Olbia to Rosemount (Minnesota) | 4,826.89 mi (7,768.12 km) |
| Olbia to Rosenberg (Texas) | 5,625.32 mi (9,053.07 km) |
| Olbia to Roseville (California) | 6,119.37 mi (9,848.17 km) |
| Olbia to Roseville (Michigan) | 4,507.46 mi (7,254.05 km) |
| Olbia to Roseville (Minnesota) | 4,818.79 mi (7,755.10 km) |
| Olbia to Rossmoor (California) | 6,292.71 mi (10,127.15 km) |
| Olbia to Rossville (Maryland) | 4,342.43 mi (6,988.47 km) |
| Olbia to Roswell (Georgia) | 4,909.84 mi (7,901.62 km) |
| Olbia to Roswell (New Mexico) | 5,808.67 mi (9,348.15 km) |
| Olbia to Round Lake (Illinois) | 4,729.75 mi (7,611.80 km) |
| Olbia to Round Lake Beach (Illinois) | 4,727.27 mi (7,607.81 km) |
| Olbia to Round Rock (Texas) | 5,659.99 mi (9,108.87 km) |
| Olbia to Rowland Heights (California) | 6,276.10 mi (10,100.40 km) |
| Olbia to Rowlett (Texas) | 5,499.77 mi (8,851.02 km) |
