| Summerlin South to Orangeburg (South Carolina) | 1,953.44 mi (3,143.76 km) |
| Summerlin South to Orangevale (California) | 368.44 mi (592.95 km) |
| Summerlin South to Orchards (Washington) | 759.53 mi (1,222.34 km) |
| Summerlin South to Orcutt (California) | 299.11 mi (481.38 km) |
| Summerlin South to Oregon (Ohio) | 1,747.01 mi (2,811.54 km) |
| Summerlin South to Oregon (Wisconsin) | 1,453.39 mi (2,339.00 km) |
| Summerlin South to Oregon City (Oregon) | 740.95 mi (1,192.44 km) |
| Summerlin South to Orem (Utah) | 349.31 mi (562.15 km) |
| Summerlin South to Orinda (California) | 396.69 mi (638.41 km) |
| Summerlin South to Orland Park (Illinois) | 1,518.54 mi (2,443.85 km) |
| Summerlin South to Orlando (Florida) | 2,043.09 mi (3,288.03 km) |
| Summerlin South to Ormond Beach (Florida) | 2,033.95 mi (3,273.32 km) |
| Summerlin South to Oro Valley (Arizona) | 356.74 mi (574.12 km) |
| Summerlin South to Oroville (California) | 412.25 mi (663.45 km) |
| Summerlin South to Oshkosh (Wisconsin) | 1,508.64 mi (2,427.92 km) |
