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Thornton Lakes


Itinerary

Thornton Lakes Trailhead
4.5 mi • 2,500 ft gain
Thornton Lake Camp
4.5 mi • 400 ft gain
Thornton Lakes Trailhead
Driving directions

How to get a permit

This trip requires a North Cascades National Park Backcountry Permit. Reservations depend on your start date:

Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan

Oct 8, 2023 – May 16, 2024

Unlimited number of permits available.

1 option


A

In-person reservations

OpensDay of12 AM PT
ClosesDay of11:59 PM PT
day of

Don’t want to miss the deadline?

Let us know when you want to go and we’ll remind you to book.


Permit details

Here is how to fill out the North Cascades National Park Backcountry Permit application:

Starting AreaShort Trails
CampsiteThornton Lake Camp

Select a start date

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