1. Ryan Bieniek
    Ryan Bieniek April 28, 2015 at 4:38 am

    wow this is awesome. do you know if Mr. White is planning to expand to other parts of the Sierras? I’m thinking north towards the Tahoe area. Thanks for sharing!!!

    1. Jeff Barrett
      Jeff Barrett April 28, 2015 at 8:18 am

      +1 for extending this to the Tahoe area! I’ve used Sierra mapper extensively, and I’d love to see any expansion of the trail coverage.

  2. gary
    gary June 7, 2015 at 7:52 am

    I really like this. I am doing my section hike next week and this is awesome. I can’t see how I missed this blog post. Thanks for the great heads up on this.

  3. Oshie
    Oshie October 20, 2015 at 12:49 pm

    Love planning a backpacking trip as much as the trip itself (if not more!) Thanks for pointing Sierra Mapper! So in love with it. You’re right with the exit Donahue Pass quota that got implemented we’re looking at alternate routes to do the John Muir Trail. This is helping plan a NoBo.

  4. David L Terrie
    David L Terrie February 25, 2017 at 4:07 pm

    Just gave it a whirl and clearly did not have enough waypoints along the JMT. Things got a little crazy south of MTR. The route was calculated, but I got an error message stating ‘this is really bad’. As an ex-coder, I’ve been there. Looks like it does a great job if you give it enough to work with. Heading SOBO in August, pending lottery / walk up.

  5. David L Terrie
    David L Terrie February 27, 2017 at 8:14 am


    I think actually just needed more to keep the track along the JMT itself. I had none between MTR and Whitney. Pretty amazing that it pieced together a custom route all on its own. He knows what he’s doing. I had to laugh at the error message because it’s the kind of thing you do give yourself a reminder and intend to remove or update later.

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