| Royston to Odessa (Texas) | 4,991.52 mi (8,033.08 km) |
| Royston to Ogden (Utah) | 4,816.41 mi (7,751.26 km) |
| Royston to Oildale (California) | 5,364.34 mi (8,633.08 km) |
| Royston to Ojus (Florida) | 4,415.63 mi (7,106.27 km) |
| Royston to Okemos (Michigan) | 3,774.09 mi (6,073.81 km) |
| Royston to Oklahoma City (Oklahoma) | 4,622.90 mi (7,439.83 km) |
| Royston to Okmulgee (Oklahoma) | 4,558.94 mi (7,336.91 km) |
| Royston to Olathe (Kansas) | 4,348.74 mi (6,998.62 km) |
| Royston to Old Jamestown (Missouri) | 4,180.71 mi (6,728.21 km) |
| Royston to Oldsmar (Florida) | 4,413.73 mi (7,103.21 km) |
| Royston to Olean (New York) | 3,570.26 mi (5,745.78 km) |
| Royston to Olive Branch (Mississippi) | 4,355.68 mi (7,009.79 km) |
| Royston to Olivehurst (California) | 5,228.84 mi (8,415.01 km) |
| Royston to Olney (Maryland) | 3,647.76 mi (5,870.51 km) |
| Royston to Olympia (Washington) | 4,804.66 mi (7,732.35 km) |
