Overview
The Mytoge Mountain Trail climbs the long eastern ridge above Fish Lake, offering one of the best sustained ridge walks in Fishlake National Forest. The route ascends through aspen on the lower slopes and transitions to open spruce-fir forest and rocky ridgeline terrain at the top. From the upper ridge, Fish Lake appears far below, framed by the plateau country that defines south-central Utah.
This is the most popular moderate trail in the Fish Lake area and the right choice for hikers who have already walked the lakeshore loop and want elevation. The grade is steady but not brutal, and the views begin well before you reach the high point.
The Route
Trailhead to Aspen Zone (Miles 0-2.0) The trail begins on the east side of UT-25 and climbs immediately through dense quaking aspen. The grade is moderate and consistent. Several switchbacks gain elevation efficiently. In early summer, wildflowers cover the aspen understory. By mile 2, you can look back west for the first good views of Fish Lake.
Aspen to Spruce Transition (Miles 2.0-3.5) Above the aspen zone, the trail enters spruce-fir forest. The canopy closes in and the temperature drops noticeably on warm days. The trail surface becomes rockier here, with occasional exposed roots. This section offers the best shade on the route.
Open Ridgeline (Miles 3.5-4.6) The trail breaks onto open ridgeline terrain at roughly 10,400 feet. The views open dramatically: Fish Lake stretches below to the west, the Fishlake Plateau extends north and south, and on clear days the Henry Mountains and Waterpocket Fold country are visible to the southeast. This is the turnaround point for the out-and-back, though the ridgeline trail continues for experienced hikers who want to extend the day.
When to Hike
June and early July bring lingering wildflowers in the aspen zone and cool temperatures on the ridge. Snow patches occasionally persist on the north-facing upper slopes into early June.
July through August is prime hiking season, but afternoon thunderstorms are a serious concern on the open ridgeline. Start before 7 a.m. and plan to be off the exposed ridge before noon. Lightning exposure above treeline is a genuine hazard.
September and October offer crisp air, dramatically reduced crowds, and the best aspen color. The trail surface is dry and firm in fall, and the views are typically clearest after the summer monsoon season ends.
What to Bring
Many hikers carry 2 liters of water for this route. There are no water sources above the trailhead, so carry everything you need. A wind layer is useful on the ridge even in summer. Trekking poles help on the rocky upper sections. Individual needs vary, but sun protection is important once the trail breaks onto open ridgeline. Check conditions at /learn/checking-conditions-before-you-go before departing.
Trailhead Access
The trailhead is located on the east side of Utah Highway 25, north of the Fish Lake boat launch. The dirt pullout is easy to miss; look for the trail sign about 0.5 miles north of the Mackinaw Campground entrance. No permit or fee is required. Dogs are welcome on leash. No restroom or water is available at the trailhead. Cell service is absent from most carriers throughout the Fish Lake area.
Nearby
The Fish Lake Loop circles the lake below and makes a good companion trail on a two-hike day. For a longer ridge experience, the Mount Terrill Summit is a more demanding option on the opposite end of the plateau. Pack out all waste and follow Leave No Trace on the ridge: /learn/leave-no-trace-7-principles.