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Mount Whitney — Main Trail

Highest peak in the contiguous US. 22 miles round trip with 6,100 ft gain. 97 switchbacks. Altitude sickness common above 12,000 ft. Permit required.

StrenuousWest14,505 ftOpen Summit

Mount Whitney — Main Trail

Overcast

Reconsider
11°
Feels -7°FSummit · 14,505 ft
6:14 AM7:29 PM
EXTREME COLD

Wind

17mph

Precip

0%

Humid

23%

Elev Δ

+200ft

12-Hour Temp Trend

6°22°

Hourly Forecast

5 AM

7°

13mph

6 AM

7°

12mph

7 AM

6°

13mph

8 AM

8°

13mph

9 AM

10°

12mph

10 AM

☀️

10°

10mph

11 AM

☀️

15°

17mph

12 PM

20°

18mph

1 PM

22°

19mph

2 PM

22°

20mph

3 PM

22°

21mph

4 PM

21°

20mph

Summit Conditions

12°F1°11°F

Dry lapse rate: 5.4°F/1,000ft · 217 ft gain

L1
Expedition-weight merino base

320g+ merino top and bottom — maximum warmth next to skin

L2
Heavy fleece + light puffy

Double mid-layer system for extreme insulation

L3
Expedition down parka

Heavy fill-power down or synthetic expedition jacket

L4
Hardshell jacket + pants

Full hardshell system — top and bottom protection mandatory

Summit Pack List

Expedition mittensBalaclavaSki gogglesChemical warmers (hands + toes)Emergency bivyThermos with hot drink

Start Cold Tip

At these temperatures, DO NOT start cold. Wear full layers from the trailhead. Exposed skin risks frostbite in minutes. Turn back if conditions deteriorate.

Updated 4:07:11 AM · America/Los_Angeles

Updated Apr 19, 4:07 AM UTC

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