For Half Dome Day Hikes: You apply for permits on Recreation.gov during the month of March for the following summer season. Lottery results are emailed around mid-April. There is an additional Daily Lottery also available two days prior to the hiking day. For more information see: Half Dome Permits for Day Hikers. If you are interested in joining us for a Half Dome in a Day Hike, you can also email us your preferred dates by March 15th and we will add you to a permit request list. If awarded we will notify you in mid-April and hold the permits for 72-hours. We recomend you also applying to increase chances. For Backpacking Trips to Half Dome, you are able to obtain a Half Dome permit if you also obtain a wilderness permit for one of seven trailheads. See here for more information: Half Dome Permits for Backpackers.