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Half Dome

Yosemite, California · 8,836 ft

What it asks of you

Objective-wide planning ranges apply only to the reviewed scope below. They are not a selected route profile, a fitness threshold, or evidence of your skills.

Reviewed scope
Half Dome summit objective in the cables-up hiking envelope from Yosemite Valley. No route selected; excludes technical rock routes and cables-down travel.
Area
Yosemite, California

Nominal high point

8,836 ft

Official fact

  • NPS geographic reference, not trail gain; the visitor page rounds to 8,800 ft.
Sources and review dates

Reviewed 2026-09-21 · evidence expires 2026-12-20

trail

trail

Explicit assumption

  • Approach trail only; the exposed cables section is separately required context.
Sources and review dates

Reviewed 2026-09-21 · evidence expires 2026-12-20

Rock terrain

exposed cable-assisted granite

Explicit assumption

  • Cable-assisted rock travel does not certify technical climbing ability.
Sources and review dates

Reviewed 2026-09-21 · evidence expires 2026-12-20

Unlisted demands are not reviewed here; missing pack weights or weekly training targets are unknown, not zero. Confirm permit, access, equipment and conditions for your exact route and dates with the official sources.

Route-specific demand

Happy Isles to Half Dome — cables-up day hike

Reviewed scope
Happy Isles–Vernal/Nevada Falls corridor–Little Yosemite Valley–subdome–Half Dome cables and summit–Happy Isles day-hike return. Mist Trail or John Muir Trail connector choices remain within the published NPS hiking envelope; no exact connector distance is asserted.
Start
Happy Isles trailhead, Yosemite Valley
End and return
Half Dome summit turnaround; return to Happy Isles
Includes
Happy Isles–Vernal/Nevada Falls corridor–Little Yosemite Valley–subdome–Half Dome cables and summit–Happy Isles day-hike return. Mist Trail or John Muir Trail connector choices remain within the published NPS hiking envelope; no exact connector distance is asserted.
Excludes
Technical rock-climbing routes, cables-down travel, overnight camping, alternate starting trailheads and side trips
Season assumptions
Cables installed and trail open; NPS conditions govern the actual dates
Itinerary assumptions
One day from Happy Isles and back; Mist/JMT connector choice remains explicit and variable

Nominal high point

8,836 ft

Official fact

  • NPS geographic reference, not trail gain; the visitor page rounds to 8,800 ft.
Sources and review dates

Reviewed 2026-09-21 · evidence expires 2026-12-20

trail

trail

Explicit assumption

  • Approach trail only; the exposed cables section is separately required context.
Sources and review dates

Reviewed 2026-09-21 · evidence expires 2026-12-20

Rock terrain

exposed cable-assisted granite

Explicit assumption

  • Cable-assisted rock travel does not certify technical climbing ability.
Sources and review dates

Reviewed 2026-09-21 · evidence expires 2026-12-20

Ascent

4,800 ft

Official fact

  • Approximate NPS ascent for its 14–16 mile day-hike envelope; connector choice varies. This is not survey precision or a training dose.
Sources and review dates

Reviewed 2026-09-21 · evidence expires 2026-12-20

Total duration

600–720 min

Official fact

  • NPS says most complete the round trip in 10–12 hours, some longer. Converted to minutes; not a completion guarantee or turnaround rule.
Sources and review dates

Reviewed 2026-09-21 · evidence expires 2026-12-20

Route reviewed 2026-09-21 · review expires 2026-12-20. These demands apply only to this route and its stated assumptions.

Sources and review

Reviewed 2026-09-21 · review expires 2026-12-20. Dates reflect operator review, not current route conditions — check conditions before you go.