Friday, February 8, 2019

Bullfrog Lake, Kings Canyon National Park
Photo by Duane Bindschadler
Thinking of hiking the John Muir Trail? Did you know that once you're south of Donahue Pass, the average elevation of the Trail is over 10,000 feet?

Are you familiar with high-altitude illness? Do you know the symptoms? Do you know what you should and shouldn't do?

This guideline provides basic information about the illnesses triggered by the reduced oxygen content of the air at higher elevations and provides recommendations for how to avoid high-altitude illness.

Comments, corrections and questions are welcome and may be entered at the bottom of the page.

Disclaimer: The descriptions in in this document are intended to be purely informational. These descriptions are not intended to replace a physician's advice.

Click here for downloadable version of the Guideline.

Latest Update: Ver 3.0 (2/9/2019)

You can contact the authors at


  1. Nice write-up, as a published author myself, a few suggestions.

    1. At top of paper indicate who the author(s) are. The word "contributor" (which appears at the END of the document) does not indicate authorship. A person can contribute to a document through verbal suggestions, written feedback etc. But someone is responsible for the actual wording and wording sequence of the document. You can list multiple authors, but the primary one is the one who has the final say-so on the wording and wording sequence of the document.

    2. Indicate copyright terms and publication date. Is the document repostable if reposted in it's entirety without alteration and without written request, for example.

    3. Indicate an email address for primary author or contact form (important if the document is redistributed).

    You should also have this in PDF form uploaded to the FILES tab in this Facebook JMT group. It would be nice to be uploaded to the Yahoo JMT group too.

    Roleigh Martin
    Lead Moderator, JohnMuirTrail Yahoo Group

    1. Hi Roleigh. Thanks for the great suggestions. I'll update the doc along the lines you've suggested.

      > You should also have this in PDF form uploaded to the FILES tab in this Facebook JMT group. It would be nice to be uploaded to the Yahoo JMT group too.

      After I make the changes you suggest, I'm happy to do that. But consider this...
      If I only upload to Google Docs (which is where the blogspot pdf viewer is looking), there will be a single place to look for the up-to-date version. In addition it seems like the comment feature in blogspot offers a little bit better way to track and respond to comments.

      What do you think? I could easily be talked out of that approach. Let me know. I'm open to your suggestions.

    2. The document has been updated with the authors clearly named, copyright terms and access to a contact email address. K.M.

  2. Kenny, if you join the JMT Yahoo Group, you could add your Google Doc as a link in the appropriate link folder there, That way you keep it as a single document. In the Fb JMT Group, they have no "links" tab, but you could create a paragraph long word document, convert to PDF, which has the title and link inside it to your google document. That way, whether the member only belongs to FB or Yahoo JMT group, they can regain access to your document at Google Docs.

    Thanks for updating the document too!

  3. Thanks Kenny, I see you added a link to this page in the correct safety folder at the Yahoo JMT site:

  4. Hi Kenny,
    I am going to put a link to your document in my next backpacking/hiking newsletter because it looks quite helpful. I'm sure a lot of people will benefit from your suggestions.
    Susan Alcorn

    1. Hi Susan. Thanks a zillion.
      In the coming weeks we're planning a revision to include information about peripheral edema. Something I didn't previous know about.
      Please let us know if you have a suggestions that might improve the document.
      Regards, Kenny