Use sunset as your turnaround alarm.
The thing nobody tells you about Utah's highest point is that you drive into Wyoming to start it. The Henrys Fork trailhead is about 29 miles out of Mountain View, Wyoming, and the 10.45 mile approach trail eats most of the distance before any real climbing begins. No permit is required for the High Uintas Wilderness, which at 453,900 acres is the largest in the state. Start the summit push early, because afternoon storms build fast at 13,528 feet.
Utah's 13,528 ft rooftop - usually a 2-3 day backpack via Henrys Fork.
3+ liters water, broken-in boots, layers for weather swings, headlamp, real food (jerky, trail mix), trekking poles, first-aid kit, and an early start.
Make it a weekend: Uinta Backcountry Lakes (Fishing, 20 mi) · Moon Lake (Fishing, 25 mi) · Moon Lake Campground (Camping, 25 mi) · Duchesne River (Fishing, 31 mi)
More hikes nearby: Amethyst Lake (Hike, 25 mi) · Ruth Lake (Hike, 31 mi) · Lofty Lake Loop (Hike, 31 mi) · Fehr Lake Trail (Hike, 33 mi)