Alex Honnold plays himself, a renowned rock climber known for his daring free solo ascents.
Tommy Caldwell portrays himself, a fellow rock climber and friend of Alex Honnold.
Jimmy Chin appears as himself, an acclaimed climber, mountaineer, and filmmaker documenting Alex Honnold's journey.
Sanni McCandless plays herself, Alex Honnold's girlfriend who offers support and perspective throughout his climbing endeavors.
Mikey Schaefer portrays himself, a climber and filmmaker involved in capturing Alex Honnold's historic achievement.
Cheyne Lempe appears as himself, a climber and part of the supportive team aiding Alex Honnold during his free solo climb.
Derek Hersey is featured in archive footage, showcasing the late climber's own daring feats on the rock faces.
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