The three-part run will take Hawks through areas recently removed from the monument's protection, and will raise money for the Bears Ears Education Center.
Vargo is one of two women to set FKTs in the Grand Canyon this month.
The Grand Canyon double-crossing record has been her number-one goal since she started trail running three years ago.
The 35-year-old broke the existing women's record by over an hour.
The 32-year-old gapped second place (and first male) by 10 hours.
From shrinking national-monument borders to changing management plans and budgets, the threats are coming from many angles.
Why Westerners disagree on protecting public lands.
The Eritrean runner tested positive for a banned asthma medication at two world championships this summer, and his title has been revoked.
The 42-year-old Boulder runner covered the 222 miles in 3 days 7 hours 57 minutes.
Meet "Stringbean," the 26-year-old who set the record on the 2,190-mile trail earlier this summer.