| Sleaford to Orangevale (California) | 5,183.00 mi (8,341.24 km) |
| Sleaford to Orchards (Washington) | 4,811.69 mi (7,743.66 km) |
| Sleaford to Orcutt (California) | 5,382.51 mi (8,662.31 km) |
| Sleaford to Oregon (Ohio) | 3,742.65 mi (6,023.21 km) |
| Sleaford to Oregon (Wisconsin) | 3,904.65 mi (6,283.93 km) |
| Sleaford to Oregon City (Oregon) | 4,833.46 mi (7,778.70 km) |
| Sleaford to Orem (Utah) | 4,803.47 mi (7,730.43 km) |
| Sleaford to Orinda (California) | 5,257.86 mi (8,461.71 km) |
| Sleaford to Orland Park (Illinois) | 3,911.46 mi (6,294.89 km) |
| Sleaford to Orlando (Florida) | 4,307.24 mi (6,931.83 km) |
| Sleaford to Ormond Beach (Florida) | 4,255.68 mi (6,848.86 km) |
| Sleaford to Oro Valley (Arizona) | 5,219.33 mi (8,399.71 km) |
| Sleaford to Oroville (California) | 5,145.43 mi (8,280.78 km) |
| Sleaford to Oshkosh (Wisconsin) | 3,822.41 mi (6,151.58 km) |
| Sleaford to Oskaloosa (Iowa) | 4,102.42 mi (6,602.21 km) |
