Tyree was discovered in January 1958 during reconnaissance flights by the United States Navy VX-6 squadron, and mapped later that month by the Marie Byrd Land Traverse Party.

[1] As of 2017, the summit had only been reached on six occasions, by a total of fifteen people, via three different routes: in January 1967 by John Evans and Barry Corbet (of Corbet's Couloir); in January 1989 by Terry ‘Mugs’ Stump; in 1997 by French alpinists Antoine de Choudens and Antoine Cayrol; and later in 1997 by Conrad Anker and Alex Lowe.

On January 3, 2012 Hans Kammerlander, Robert Miller and Christian Stangl repeated the French route to make the fifth ascent.

The Tyree 50/50 expedition included Richard Thurmer, Jr, Victor Saunders, Maria "Pachi" Paz Ibarra, Seth Timpano and Todd Tumolo.

[5] Jenn's team members were Sebastian Grau-Kunhardt, Todd Passey, Sam Hennessey and Rob Smith The climbing season is November to January, when the sun is above the horizon 24 hours a day and the air is warmest—up to −30 °C (−20 °F) near the summit.