| State: | UT |
| Type: | SR |
| Route: | 25 |
| Map Custom: | yes |
| Alternate Name: | Fishlake Scenic Byway |
| Section: | 108 |
| Length Mi: | 9.995 |
| Length Round: | 3 |
| Established: | 1918 as a state highway; 1927 as SR-25 |
| Direction A: | South |
| Terminus A: | at Fish Lake Junction |
| Direction B: | North |
| Terminus B: | Forest Service Road 319 at Fish Lake |
| Previous Type: | SR |
| Previous Route: | 24 |
| Next Type: | SR |
| Next Route: | 26 |
State Route 25 (SR-25), also part of the designated Fishlake Scenic Byway, is a state highway in the south central portion of the U.S. state of Utah. SR-25 runs from the junction of SR-24 near the town of Koosharem northeast to the west shore of Fish Lake. The highway runs for 9.995miles.
Fishlake Scenic Byway is a route of 29.6miles that traverses mainly through the Fishlake National Forest, Utah. The byway comprises SR-25 and County Roads FAS-2554 and FAS-3268, beginning at SR-24, and running to SR-72. The byway starts at an intersection with SR-24 and immediately turns north-northeast through mountainous terrain before descending into a basin where Fish Lake is located. The route continues northeast and passes the west shore of Fish Lake, Johnson Valley Reservoir, and ending at the junction of SR-72, just nine miles northeast of the township of Loa in southeast Utah.
The road from SR-24 at Plateau Junction east to Fish Lake was added to the state highway system in 1918,[1] and numbered SR-25 by the state legislature in 1927.[2] The west end was moved south to Fish Lake Junction in 1935 as a federal aid project,[1] but the legislative description was not changed until 1953.[3] The Fishlake Scenic Byway was designated on April 9, 1990 on SR-25 between SR-24 and Johnson Valley Reservoir. The Byway was extended in August 1992 between Johnson Valley Reservoir and SR-72 to comprise the southern portion of the Gooseberry/Fremont Road Scenic Backway.
Pando, a clonal quaking aspen stand, that, according to some sources, is the oldest (80,000 years) and largest (106acres, 13000000lb) organism on Earth, is located 1 mile (1.61 km) southwest of Fish Lake on Utah route 25.[4]