From 2017 to 2019, the YouTube channel of Wired magazine produced a series of 20 videos titled "Almost Impossible", where reporter Robbie Gonzalez investigated how various feats of human athleticism are performed, and what it would take to push their limits even further. As of the creation of this market in February 2026, ten of the "Almost Impossible" feats listed in the titles of these videos have been accomplished by humans, leaving ten remaining. This market will resolve to whichever of these feats is first accomplished successfully.

Clarifications (I will add more here as needed):
Juggling - as ratified by juggling-records.com or other source widely recognized by the juggling community
Stone skipping - as ratified by the Guinness Book of World Records
Cycling - must be performed on a cycling track
Field goal - can be kicked in practice

"Almost Impossible" playlist: https://www.youtube.com/playlist?list=PLibNZv5Zd0dxkbCooIoTnbkAHz_Z6YvTK