About the hike

Each year we hike to the top of Half Dome in Yosemite National Park, California. It is a significant challenge -looming 4800 feet above the floor of Yosemite Valley, and a strenuous round trip of more than 18 miles.

For us, the spiritual nature of Yosemite and the challenge of the hike parallels the experience of families as they struggle with histiocytosis. With the support of a great group of friends committed to the cause, you will find a source of strength that will take you farther than you thought possible. It is an exhilarating experience and an everlasting memory you will share with your fellow hikers.

The summit of Half Dome is a very strenuous 18-mile round trip hike. It typically takes 10 to 14 hours to complete. Yosemite Valley is at 4000 feet, and the top of Half Dome is at 8800 feet, for a gain of 4800 feet. The air is much thinner at 8800 feet, and it is important to arrive at least 24 hours in advance to help your body acclimate. The final 400 feet of the hike is extremely difficult, requiring the hiker to pull himself/herself up cables mounted on very steep rock wall. With the encouragement of your fellow hikers, you can make it!