Hi Greg,
Good to hear that you're enjoying 'Dances with marmots'. smile

Checked out that link - Wow! Heather is a dynamo! What a tough lady she must be, mentally as well as physically. Good on her. Knocking out 40-50 miles a day every day for two months over that terrain takes some real inner strength.
Here's another link that relates to her and Josh Garret another 'ultra' hiker..

Surprising the barriers the human animal can break when it starts thinking 'what if...'
Great stuff!
Cheers, George

Dances With Marmots