Utah State Route 266
| 4700 South/4500 South | ||||
| Route information | ||||
| Maintained by UDOT | ||||
| Length | 8.120 mi (13.068 km) | |||
| Existed | 1959–present | |||
| Major junctions | ||||
| West end | I-215 in Taylorsville | |||
| SR-68 in Taylorsville I-15 in Murray US 89 in Murray SR-71 in Murray I-215 in Holladay | ||||
| East end | Wasatch Boulevard in Holladay | |||
| Location | ||||
| Country | United States | |||
| State | Utah | |||
| Highway system | ||||
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State Route 266 is a west–east thoroughfare completely within Salt Lake County in northern Utah that connects both sides of the I-215 beltway. It is known as 4500 South and 4700 South along the route.