He competed for the University of Oregon from 2017 to 2021, where he won the 5000 m at the 2021 NCAA Division I Outdoor Track and Field Championships in 13:12.27, a collegiate record.

Teare initially played soccer and lacrosse before turning to running, while growing up in Alameda, California.

For his achievements, Teare was named the 2016 East Bay Times Boys Track and Field Athlete of the Year.

Teare set another collegiate record and won a national title in the 5000 m at the 2021 NCAA Outdoor Track and Field Championships, finishing in 13:12.27.

[11] In December 2021, Teare announced his decision to forego his remaining eligibility in the NCAA and to compete professionally for the Bowerman Track Club under coach Jerry Schumacher.

The following month, he aimed to set a new American indoor mile record alongside his former teammate Cole Hocker.

In March, Teare ran the 5000 m at the Cardinal Classic, setting a personal best of 13:06.73 and meeting the qualifying standard in the event for the World Athletics Championships.

[17] Later that month, Teare formally confirmed that he had relocated to Virginia to train with Cole Hocker under his former coach Ben Thomas.

[1] On February 21 at the BU Terrier Meet in Boston, Teare met the world standard in the indoor 5000 meters, running 12:57.97.