Half Dome hike: permits, cable season and a complete day plan
The Half Dome hike is a long, strenuous Yosemite outing with a steep cable-assisted summit section. Start with the route demands and seasonal access, then consider permits and travel. Getting a permit does not establish that the conditions or the hike are suitable for your group.
Understand the full route
The National Park Service describes the day hike as about 14 to 16 miles round trip with roughly 4,800 feet of elevation gain. Its planning estimate is commonly 10 to 12 hours, with some hikers taking longer. Those figures describe a substantial mountain day, not a short summit add-on.
Map the approach, turnaround options and the return to your actual accommodation or vehicle. Add time for breaks, route decisions and slower movement on the descent. A timetable that works only if every section goes perfectly has very little room for ordinary delays.
The cable season controls this plan
The cables normally operate between late May and October, but installation and removal depend on conditions. Check the live NPS status for the season you intend to visit. A historical calendar or a video from another year cannot confirm access.
NPS specifically advises against attempting the summit when the cables are down, the rock is wet or storm clouds are present. This guide does not describe an off-season ascent. If your trip falls outside the operating season, plan a different Yosemite hike rather than treating the missing cables as an equipment problem to improvise around.
Choose the correct permit process
A Half Dome permit is required when the cables are up. NPS distributes day-hiking permits through Recreation.gov lotteries, with a preseason process and limited in-season opportunities. Check the current application dates and conditions directly before making non-refundable travel commitments.
An overnight wilderness trip follows a different process. If you plan to camp in the backcountry, read the wilderness-permit instructions and request the relevant Half Dome permission through that route when applicable. A day-hiking permit does not include camping or accommodation.
Read the named permit-holder requirements before submitting an application.
Keep the permit confirmation and required identification available.
Check park-entry and accommodation arrangements separately.
Do not assume an application, waiting list or payment attempt is a confirmed permit.
Make weather and turnaround decisions early
Review the mountain forecast and park conditions before departure. Agree on a turnaround time that leaves room for the return; do not borrow someone else’s clock time without considering your start, daylight and pace. Reaching a planned checkpoint late is information that should change the plan.
If conditions deteriorate, the summit can wait. A permit is permission under the applicable rules, not a reason to continue through unsuitable conditions. Discuss this before the group is tired and invested in finishing.
Prepare for the return as carefully as the climb
Carry suitable footwear, food, enough water for your plan, navigation and a proper headlamp with spare power. NPS stresses that a phone is not an adequate substitute for a light. If your water plan includes treatment along the route, confirm current water availability and carry appropriate treatment equipment.
Keep the cable area orderly, follow ranger directions and pack out all equipment, including gloves. This route places demands on access, timing and individual preparation at the same time. Build a plan that still makes sense when your pace slows, rather than one that depends on reaching the summit at any cost.
National Park Service: Half Dome day-hike conditions and preparation
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