Difficulty: Extreme. It's long, steep at the beginning and end, and more dangerous than most Yosemite hikes. It's probably the most difficult of all Yosemite day hikes.
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The trail to Half Dome from Yosemite Valley is an extremely steep and strenuous hike covering over 14-16 miles. Hikers gain 4,800 feet of elevation along the trail that passes highlights such as Vernal Fall and Nevada Fall, before reaching the cables on Half Dome's steep granite domes.
The National Parks Service describes Half Dome as the most strenuous day hike in Yosemite, and probably the toughest (recommended) day hike in any National Park. So while you can certainly just show up and give the hike a go, you'll enjoy it more if your fitness level is up to snuff.
This climb is hard!The granite surface has been worn smooth by the shoes of the thousands of people before us. The climb is so steep that we pulled ourselves up more with our upper body strength than by walking up with our feet. It took us roughly 20 minutes to climb the 400 feet up the Half Dome cables.
Half Dome has an elevation of 8,844 feet and sits 4,737 feet above the valley floor. It takes an equivalent 473 flights of stairs to reach the top, which means 118 trips from the First Floor Lantern to the McFadden-Willis Reading Room.
Most hikers take 10 to 12 hours to hike to Half Dome and back; some take longer. If you plan on hiking during the day, it's smart to leave around sunrise (or earlier) and then have a non-negotiable turn-around time.
Difficulty Of The Half Dome TrailIf you are not comfortable with heights, you may want to avoid the cable route. Hikers report this being the most difficult section of the hike.
The National Park Service considers ascending the 4,800 feet and traveling the minimum 14.5 miles to Half Dome's summit, “one of the most challenging day hikes in any national park.” Measured by vertical ascent, hiking Half Dome is roughly three times as challenging as hiking Angels Landing, and even includes a 7-mile ...
A typical flight of stairs has 13 to 16 steps. The average length (vertical height) of a flight is 8 1/2 to 11 feet. Your local building codes impact the number of steps and other dimensions.