500 Free - 4:22.04, at Pac-12 Championships (March 8, 2024); 10th fastest in program history
200 Breast - 1:59.12, at Big 12 West Championship (Jan. 16, 2026)
100 Fly - 45.98, at Big 12 Championships (Feb. 26, 2025); ** SET PROGRAM RECORD **
200 Fly - 1:42.86, at Pac-12 Championships (March 8, 2024); ** SET PROGRAM RECORD **
200 IM - 1:44.23, at SMU Invitational (Nov. 22, 2025); third fastest in program history
400 IM - 3:46.64, at Pac-12 Championships (March 9, 2024); fourth fastest in program history
2024-25 Season (Junior)
Second Team All-Big 12
CSCAA Second Team Scholar All-American
CSC Academic All-District
All-Academic Team Award (highest cumulative GPA on the men’s team)
Reached A finals in both the 100 Fly at 200 Fly at the CSCAA National Invitational Championship, finishing seventh and eighth, respectively
Finished fifth in the 200 Fly and seventh in both the 100 Fly and 200 IM at the Big 12 Championships
Won the 200 Fly and took second in the 100 Fly and 200 Free against BYU on Feb. 7
Won the 200 Free against Wyoming on Jan. 31
Won the 200 Fly and took second in the 100 Fly against Pittsburgh and SMU
Victorious in both the 100 and 200 Free against Denver on Jan. 17 and the 100 Free and 200 Fly against UCSB and UCLA on Jan. 10
Won the 200 Fly, placed third in the 100 Fly and finished 11th in the 200 IM at the Art Adamson Invitational
Also served as the leadoff in the 800 Free Relay that took second at Texas A&M
Won timed finals in both the 100 and 200 Fly against UNLV on Nov. 1 after finishing second in both against Arizona the week prior
2023-24 Season (Sophomore)
Pac-12 Winter Honor Roll Selection
CSC Academic All-District Selection
Won the 200 fly, the 100 free and the 200 IM in a win over LSU on Oct. 7
Helped the Utes win the 400 free relay on day one of the CMU Intermountain Shootout
Won the 200 fly and the 100 free to help lead Utah past UNLV on Nov. 4
Recorded an Olympic Trial cut in the 1200 fly at the US Open
Helped the Utes win the 800 medley relay and top Colorado Mesa on Jan. 5
Part of a victorious 400 medley relay team vs. Wyoming on Jan. 19
Won the 100 free at BYU, tying the Richards Building Pool record at 43.97
Placed first in the 200 fly and the 100 fly as Utah repelled USC on Feb. 17
Made the 200 fly B final, took part in the 200 free relay, the 400 free relay and 400 medley relay at the Pac-12 Championships
2022-2023 Season (Freshman)
Earned the Pac-12 Men’s Swimmer of the Week award on Jan. 31
Named King of the Pool after Utah’s Intrasquad Meet
Recorded his first victory of the year in the 200 IM against California on Oct. 12
Notched wins in the 200 fly and the 500 free and part of victorious quartet in the 200 free relay vs. UNLV on Nov. 4
Won the 500 free B Final at the Big Al Invitational with the sixth-quickest mark in school history and logged Utah's 10th-fastest mark in the 200 free
Helped the Utes post a first-place finish in the 400 medley relay and the 200 free relay and took first in the 200 free against Colorado Mesa on Jan. 6
Collected triumphs in the 100 fly and the 200 IM and part of victorious teams in the 200 medley relay and the 400 free relay vs. CMU on Jan. 7
Logged three wins during Utah's victory over BYU and helped the Utes take the top spot in the 200 free relay against BYU on Jan. 8
Put together another first-place showing in the 500 free against USC on Feb. 10.
Competed in five events at the Pac-12 Championships, recording top 20 finishes in the 200 fly, 400 IM and 500 free and posted Utah's fifth-fastest time in the 400 IM
Hear It From Harlan with Utah Diving's Holly WaxmanHear It From Harlan with Utah Diving's Holly Waxman
Monday, April 22
Jaek Horner becomes the FIRST Ute on record to earn Pac-12 Swimmer of the Week two weeks in a row!Jaek Horner becomes the FIRST Ute on record to earn Pac-12 Swimmer of the Week two weeks in a row!
Wednesday, February 21
Good Luck to Swimming and Diving at the Pac-12 ChampionshipsGood Luck to Swimming and Diving at the Pac-12 Championships
Tuesday, February 21
Utah Swimming and Diving Beats BYU in Dual MeetUtah Swimming and Diving Beats BYU in Dual Meet