Half Dome | TravelDojo

Half Dome is a prominent granite dome in Yosemite National Park, California, with a sheer face on one side and a rounded, exposed back face. The summit rises prominently above Yosemite Valley and is one of the park’s best-known rock features.

The standard visitor experience is a long day hike that often follows the Mist Trail or John Muir Trail and finishes via the final cable-assisted section up the dome’s steep eastern slope. The cable section covers the last approximately 120 metres (about 400 feet) of steep rock and is installed seasonally to aid hikers.

Experienced climbers also tackle the dome’s vertical faces using multi-pitch big-wall routes; these routes are technical and attract climbers from around the world. Views from the summit encompass Yosemite Valley, El Capitan and the high Sierra.

The dome is a granitic formation sculpted by uplift and glacial and erosional processes over geological time. The first recorded ascent of the summit by non-indigenous climbers was by George G. Anderson in 1875, who used hand-drilled iron fittings to aid his climb. The cable system for hikers was installed in the early 20th century and has been maintained in various forms since to allow non-technical access to the summit.

Half Dome sits at the eastern end of Yosemite Valley within Yosemite National Park in central Sierra Nevada, California. It is a focal point of the valley skyline and is reached from trailheads in the Yosemite Valley area.

Permit requirement: Permits are required for summit climbs that use the cables; permit season typically runs in late spring to early fall when the cables are installed and maintained.
Hike difficulty: The round-trip hike from the Yosemite Valley floor to the summit and back is strenuous, commonly covering about 14-16 miles with roughly 1,500 metres (4,800 feet) of elevation gain depending on route choices.

What to See #

Cables Route: A marked hiking route that ascends the steep northeast face to the summit using metal cables over the final roughly 120 metres (about 400 feet); the cable section is steep and requires caution and a permit during the operating season.
Technical climbing routes: Sheer granite faces used for technical big-wall climbing with multiple multi-pitch routes on the non-hiking sides of the dome; these routes require advanced rock-climbing skills and equipment.

How to Get to Half Dome #

Half Dome is reached from Yosemite Valley inside Yosemite National Park. Drive or take park shuttle/YARTS coach into Yosemite Valley; the trailhead for the standard Half Dome routes starts at Happy Isles/Mist Trail (reachable by the Yosemite Valley Shuttle - get off at the Happy Isles stop and it’s a short walk to the trailhead).

The hike from the valley floor to the Half Dome summit is a strenuous back‑country trek of roughly 14-16 miles round trip with about 4,700-4,800 ft (≈1,400-1,460 m) of elevation gain; the final ascent uses cables for which a permit is required during the season. By car Yosemite Valley is roughly 3.5-4 hours (around 150-200 miles depending on route) from the San Francisco Bay Area; confirm shuttle schedules and permit requirements before attempting the hike.

Tips for Visiting Half Dome #

Secure a Half Dome permit (required for the cable section during the permit season) well in advance via the Yosemite permit lottery or last‑minute release windows; without a permit the cables route is closed to climbers.
Start the hike very early (pre‑dawn departures are common) to avoid the midday heat and long cable‑section queues - early starts also reduce exposure to afternoon thunderstorms that can make the cables dangerous.
Approach from the Mist Trail or John Muir Trail and use Yosemite Valley shuttle services to avoid parking congestion at trailheads; if the cables are wet or closed, turn back - the route becomes extremely hazardous.
Don't assume crowds disperse near the summit: the narrow cable section bottlenecks, so wait for quieter windows (early morning or late afternoon) to minimize time spent in congested, exposed positions.

Best Time to Visit Half Dome #

Best visited in summer for cable-assisted climbs (permit required during cable season); spring and autumn offer fewer crowds but conditions can be variable due to snow or early closures.

Summer (prime climbing season)

June-September · Valley ~20-35°C; high elevations much cooler

Main season for Half Dome climbs and the cable route-permits are required during the cable season and early mornings are best to avoid heat and crowds.

Spring (variable)

May-June · Valley ~10-25°C; higher elevations may still have snow

Snowmelt can make conditions variable and the cables may open later in spring depending on snow and runoff; check park notices before planning a summit attempt.

Autumn (cooler, less crowded)

September-October · Valley ~10-25°C; cooler at elevation

Generally stable weather and fewer visitors than mid-summer; cables may remain open early in autumn but availability can vary by year.