AJ Aj Ernst

AJ Aj Ernst

United StatesUnited StatesActive
Born
Aug 28, 1998 (28 years old)
Events
Mile Short Track · 1500 Metres Short Track

AJ Aj Ernst is a United States middle-distance runner, born on August 28, 1998. He competes primarily in the 800m, 1500m and 1500m.

His personal bests include 1:50.95 in the 800m, 3:36.98 in the 1500m, 3:39.00 in the 1500m, 3:54.33 in the Mile and 3:52.81 in the Mile. He is currently active on the international athletics circuit, representing United States.

Personal best · Mile Short Track3:57.76
2026 season best3:57.76Jan 31, 2026 · Boston Univ. Track & Tennis Center, Boston, MA
2026 season best
Personal best · 1500 Metres Short Track3:40.51
Last competitionBoston University John Thomas Terrier ClassicJan 31, 2026 · 3:40.51
Boston University John Thomas Terrier Classic

As of Nov 6, 2026: Mile Short Track 3:57.76, 1500 Metres Short Track 3:40.51, 2026 season best 3:57.76 (Jan 31, 2026, Boston Univ. Track & Tennis Center, Boston, MA (USA)) · Last competition: Boston University John Thomas Terrier Classic, Jan 31, 2026, 3:40.51 · 28 years old

Personal bests

WA points calculator →
DisciplineResultAll-time2026
800mVA 2016United States 800 m all-time list1:50.95999 pts––
1500mIndoorMA 20233:36.981,200 pts–#76
1500mOR 2021United States 1500 m all-time list3:39.001,120 pts#994–
MilePA 2024United States Mile all-time list3:54.331,146 pts––
MileIndoorMA 20243:52.811,225 pts–#108
3000mIndoorNY 20198:05.311,047 pts––

Progression

Compare me
SeasonDisciplineResultWindDateCompetitions
20261500m Indoor3:40.51–Jan 31, 2026Boston University John Thomas Terrier Classic
20261500m-short-track Indoor3:40.51–Jan 30, 2026Boston University John Thomas Terrier Classic
20261500m-short-track 3:40.51–Jan 31, 2026Boston University John Thomas Terrier Classic
2026Mile Indoor3:57.76–Jan 31, 2026Boston University John Thomas Terrier Classic
2026mile-short-track Indoor3:57.76–Jan 31, 2026Boston University John Thomas Terrier Classic
2026mile-short-track 3:57.76–Jan 31, 2026Boston University John Thomas Terrier Classic
20251500m-short-track Indoor3:37.49–Feb 21, 2025Boston University DMR Challenge
20251500m Indoor3:37.49–Feb 21, 2025Boston University DMR Challenge
Compare me with AJ Aj Ernst
FAQ

Frequently asked questions

AJ Aj Ernst's Mile Short Track personal best is 3:57.76, set on Jan 30, 2026 in Boston Univ. Track & Tennis Center, Boston, MA (USA).

AJ Aj Ernst competes in the Mile Short Track and 1500 Metres Short Track.

2026 season best: 3:57.76, set on Jan 31, 2026 in Boston Univ. Track & Tennis Center, Boston, MA (USA). Last competition: Boston University John Thomas Terrier Classic on Jan 31, 2026, 3:40.51.