| Upheaval Dome Overlook Trail | Canyonlands National Park | |
| This trail leads one mile one-way to a series of overlooks of Upheaval Dome. |
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| Upheaval Dome Trail | | |
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| Upper Grants Ranch Trail | | |
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| Upper Muley Twist | Capitol Reef National Park | 14 |
| A hike through Upper Muley Twist Canyon, which can be done as a long day-hike (if starting from Strike Valley Overlook) or as an overnight backpack. Colorful canyon with many arches; spectacular views from Strike Valley Overlook and trailhead; 9 miles ... |
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| Upper Muley Twist Trail | Capitol Reef National Park | |
| The trek through Upper Muley Twist Canyon leads visitors on a nine mile loop hike past natural arches, canyon narrows and panoramic vistas. |
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| Upper Trail | | |
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| Vernal/Lapoint Loop | Ashley National Forest | 49.2 |
| From Information Center, ride 5.5 blocks to 500 West (3rd light) and turn right. Travel 5 blocks to 500 North, and follow curve to left onto 500 North. Route travels through residential area and past the high school. About 3 miles further, a sign will ... |
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| Walters Wiggles | | |
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| Wardsworth Canyon Trail | Uinta National Forest | 7.4 |
| The creek itself contains numberous pools and rapids to entice the fisherman. The trail is easy walking except for a number of short, steep trail bypasses where the original trail has been washed out by flooding. In a few cases these bypasses may be di... |
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| Watchman Trail | Zion National Park | |
| This trail leads one mil east from a trailhead between South and Watchman Campgrounds. It ascends 400 feet to an overlook of lower Zion Canyon. |
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| Water Canyon Trail | | |
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| Waterfall Canyon Trail | Wasatch-Cache National Forests | 0.8 |
| The trail begins at the head of 29th street. Follow 4-Wheel drive road into the mouth of the canyon. Watch out for rattle snakes. |
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| Weber River Trail | Wasatch-Cache National Forests | 7 |
| A 7.0 mile trail following the Weber River from Pass Lake to Holiday Park. Both ends of the trail are accessible by road. |
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| Weeping Rock Trail | Zion National Park | |
| This trail leads one quarter mile to Weeping Rock. Water seeping through the porous Navajo sandstone to the more durable shale flows horizontally reaching the rocks surface. |
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| West Fork of Blacks Fork and Dead Horse Lake | Wasatch-Cache National Forests | 11 |
| About 1/4 mile below Dead Horse Lake, the trail intersects with the East Fork Blacks Fork trail going to Red Knob Pass. By following this trail east for 2.5 miles you come to Red Knob Pass. The trail up to the pass is steep and rocky. As you reach the ... |
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| West Rim Trail | Zion National Park | |
| This trail leads 14 miles one-way from The Grotto in Zion Canyon to Lava Point on Horse Pasture Plateau. This is a strenuous overnight trip through rugged, but scenic desert terrain. |
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| West Summit Trail | | |
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| Wet Sandy Trail | | |
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| Wetherill Trail | | |
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| Whale Rock Trail | Canyonlands National Park | |
| This route climbs steeply up Whale Rock to a good viewpoint of the surrounding terrain. |
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| Wheatgrass Trail | Wasatch-Cache National Forests | 10 |
| Proceed through Boy Scout Camp and up canyon. Cross small dam to east side; head north up Wheatgrass Canyon to Hwy. 39. |
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| Whipple Trail | | |
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| Whiskey Creek | Wasatch-Cache National Forests | 1 |
| This trail is actually constructed for 1,700 feet only. At this point a game trail extends up the hill for .7 mile and ends at Bourbon Lake, 9,820 feet elevation. The constructed trail is easy to follow but the remainder of the trail can be difficult. |
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| White Hollow Pack Trail | | |
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| White Ledges/Dan Henry Trail | Fishlake National Forest | 15 |
| Head out of the park and go right, heading up sixmile canyon. Just under 2 miles from the park you will see the trailhead for the Dan Henry Trail, also FS Trail 95, on your right. In about one-half mile, you'll cross the forest service boundary. Contin... |
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