| Southlake to Orangeburg (South Carolina) | 940.93 mi (1,514.28 km) |
| Southlake to Orangevale (California) | 1,400.83 mi (2,254.42 km) |
| Southlake to Orchards (Washington) | 1,606.05 mi (2,584.69 km) |
| Southlake to Orcutt (California) | 1,337.94 mi (2,153.21 km) |
| Southlake to Oregon (Ohio) | 962.08 mi (1,548.31 km) |
| Southlake to Oregon (Wisconsin) | 807.51 mi (1,299.57 km) |
| Southlake to Oregon City (Oregon) | 1,599.07 mi (2,573.46 km) |
| Southlake to Orem (Utah) | 951.15 mi (1,530.72 km) |
| Southlake to Orinda (California) | 1,445.06 mi (2,325.59 km) |
| Southlake to Orland Park (Illinois) | 785.25 mi (1,263.74 km) |
| Southlake to Orlando (Florida) | 987.73 mi (1,589.60 km) |
| Southlake to Ormond Beach (Florida) | 981.13 mi (1,578.97 km) |
| Southlake to Oro Valley (Arizona) | 804.28 mi (1,294.37 km) |
| Southlake to Oroville (California) | 1,428.59 mi (2,299.09 km) |
| Southlake to Oshkosh (Wisconsin) | 893.56 mi (1,438.05 km) |
