AJ Ernst USA   
Date of birth: 28 August 98
Age: 25 years 241 days
Height: 178 cm
Weight: 62 kg
10km, Road World Alltime no. 6022 29:57 Gloucester MA 25 Sep 2022
1500m World Alltime no. 1696 3:39.00 Eugene OR 9 Jun 2021
One Mile World Indoor Alltime no. 58 3:52.81 Boston MA 3 Feb 2024
1500m World Indoor Alltime no. 155 3:36.98+ Boston MA 26 Feb 2023

PROGRESSION

Personal bests in BOLD.

 
800m
Outdoor Alltime  Show/hide
2016  1:51.17w    1-HSBridgewater MA29 May
2023  1:54.76w    12Demorest GA30 Jun
Indoor Alltime  Show/hide
2016  1:53.80iw    1rBBoston MA6 Feb
2017  1:52.92iw    2Lynchburg VA11 Feb
 
1500m
Outdoor Alltime  Show/hide
2015  3:47.88w    3Waltham MA13 Jun
2017  3:50.88w    9Charlottesville VA29 Apr
2021  3:39.00w    7s1Eugene OR9 Jun
2022  3:40.05w    6q1Bloomington IN27 May
2023  3:41.74w    3Concord MA10 Jun
Indoor Alltime  Show/hide
2020  3:43.00+iw    Boston MA14 Feb
2023  3:36.98+iw    4Boston MA26 Feb
2024  3:37.17+iw    4Boston MA3 Feb
 
One Mile
Outdoor Alltime  Show/hide
2015  4:15.85w    1-HSFitchburg MA6 Jun
2021  4:00.64w    1Providence RI9 Apr
2022  4:00.36w    3Providence RI8 Apr
Indoor Alltime  Show/hide
2017  4:06.05iw    8Boston MA4 Feb
2018  4:06.14iw    1rDBoston MA10 Feb
2020  3:59.38iw    5Boston MA14 Feb
2023  3:53.61iw    8Boston MA26 Feb
2024  3:52.81iw    4Boston MA3 Feb
 
Mile, Road
Outdoor Alltime  Show/hide
2023  4:11w    5Boston MA15 Apr
 
3000m
Indoor Alltime  Show/hide
2018  8:22.46iw    1Lynchburg VA27 Jan
2019  8:05.31iw    4r3New York NY26 Jan
 
5000m
Outdoor Alltime  Show/hide
2019  14:33.73w    24Raleigh NC30 Mar
 
10km, Road
Outdoor Alltime  Show/hide
2022  29:57w    1Gloucester MA25 Sep

IN MAJOR EVENTS

PERSONAL BESTS

note: click on event name to get head to head stats against another athlete,
click on indoor/outdoor to see PB progression.

 
800m
Outdoor1:51.17    Bridgewater MA29 May 2016
Indoor1:52.92    Lynchburg VA11 Feb 2017
 
1500m
Outdoor3:39.00    Eugene OR9 Jun 2021
Indoor3:36.98+    Boston MA26 Feb 2023
 
One Mile
Outdoor4:00.36    Providence RI8 Apr 2022
Indoor3:52.81    Boston MA3 Feb 2024
 
Mile, Road
Outdoor4:11    Boston MA15 Apr 2023
 
3000m
Indoor8:05.31    New York NY26 Jan 2019
 
5000m
Outdoor14:33.73    Raleigh NC30 Mar 2019
 
10km, Road
Winstreak: 1 (finals)  Show/hide   
Outdoor29:57    Gloucester MA25 Sep 2022

AVERAGES & 10 BEST RESULTS


1500m, 10 best results (legal):
3:36.98+i  4Boston MA26 Feb 2023
3:37.17+i  4Boston MA3 Feb 2024
3:39.00   7s1Eugene OR9 Jun 2021
3:39.14   3q1Jacksonville FL28 May 2021
3:40.05   6q1Bloomington IN27 May 2022
3:41.04   7s1Eugene OR8 Jun 2022
3:41.74   3Concord MA10 Jun 2023
3:41.99   5rBRaleigh NC24 Mar 2022
3:42.95   4Devonshire21 May 2023
3:43.00+i  Boston MA14 Feb 2020
 
Average: 3:40.306
 

One Mile, 10 best results (legal):
3:52.81i  4Boston MA3 Feb 2024
3:53.61i  8Boston MA26 Feb 2023
3:59.38i  5Boston MA14 Feb 2020
4:00.36   3Providence RI8 Apr 2022
4:00.64   1Providence RI9 Apr 2021
4:03.16i  1Annapolis MD1 Feb 2020
4:06.05i  8Boston MA4 Feb 2017
4:06.14i  1rDBoston MA10 Feb 2018
4:14.85i  6Iowa City IA20 Jan 2018
4:15.85   1-HSFitchburg MA6 Jun 2015
 
Average: 4:03.285
 

Total results in db: 60

By event:

800m:7
1500m:22
One Mile:17
Mile, Road:1
3000m:5
Two Miles:1
5000m:4
10km, Road:1
Cross Country:2

IN 2024

position in the world list in brackets following the season's best,
junior list position in green and youth list position in orange.
help: click on competition name or Venue to see competition results.
help: click on placing to see event results in the competition.

1500m
3:37.17+iw
SB (36)
4Boston MABoston MA3 Feb 
One Mile
3:52.81iw
PB (16)
4Boston MABoston MA3 Feb 
DNFiw
rBBrighton MABrighton MA9 Feb 
Two Miles
DNFiw
MillroseNew York NYMillrose, New York NY11 Feb 
5000m
DNFiw
Boston MABoston MA2 Dec 2023 
DNFiw
Boston MABoston MA26 Jan 
DNFiw
Boston MABoston MA16 Feb 

TOP 100 WORLD LIST POSITIONS

SeasonInd/OutEventPosResult
2020Indoor1500m853:43.00+
2020IndoorOne Mile293:59.38
2023Indoor1500m253:36.98+
2023IndoorOne Mile233:53.61
2024Indoor1500m363:37.17+
2024IndoorOne Mile163:52.81

WINSTREAKS