CA

Cassidy Armstrong

USAUSAWomen
Birth date-
Height-
Weight-

Cassidy Armstrong is a United States middle-distance runner. She competes primarily in the 1500m, Mile and 3000m.

Her personal bests include 4:30.27 in the 1500m, 4:48.87 in the Mile, 9:25.63 in the 3000m, 10:24.40 in the 2Miles and 10:24.40 in the 2MilesShor. She is currently active on the international athletics circuit, representing United States.

Key facts
Mile
4:48.87
2026 season best
4:48.87
Jun 7, 2026 · Renton Memorial Stadium, Renton, WA (USA)
2026 season best
Last competition
Brooks PR Invitational
Jun 7, 2026 · 4:48.87
Brooks PR Invitational

As of Sep 29, 2026: Mile 4:48.87, 2026 season best 4:48.87 (Jun 7, 2026, Renton Memorial Stadium, Renton, WA (USA)) · Last competition: Brooks PR Invitational, Jun 7, 2026, 4:48.87

PB

Personal bests

4:30.27
Mile
4:48.87
9:25.63
2Miles
10:24.40
2MilesShor
10:24.40

Performance Charts

Season bests

SeasonDisciplineResultWindDateTrendCompetitions
2026
1500m
4:30.27-Jun 7, 2026-Brooks PR Invitational
2026
Mile
4:48.87-Jun 7, 2026
↑
Brooks PR Invitational
2026
3000m
9:25.63-Feb 13, 2026
↑
Husky Classic, Dempsey Indoor, Seattle, WA (i)
2026
2MilesShor
10:24.40-Mar 13, 2026-New Balance Nationals Indoors
2026
2Miles
10:24.40-Mar 13, 2026
↑
New Balance Nationals Indoors
2025
Mile
4:59.29-Jan 18, 2025
↑
2025 UW Preview/Mile City
2025
3000m
9:31.65-Feb 14, 2025
↑
Husky Classic, Dempsey Indoor, Seattle, WA (i)
2024
Mile
4:55.02-Jun 12, 2024
↑
Brooks PR Invitational, Renton Memorial Stadium, Renton, WA - High School Events
2024
2Miles
10:42.61-Jun 14, 2024
↑
Nike Outdoor Nationals, Hayward Field, Eugene, OR - Championship High School Event

2026

6 performances
DisciplineResultWindDateCompetitions
Mile
4:48.87-Jun 7Brooks PR Invitational
1500m
4:30.27-Jun 7Brooks PR Invitational
2MilesShor
10:24.40-Mar 13New Balance Nationals Indoors
3000m
9:25.63-Feb 14Husky Classic, Dempsey Indoor, Seattle, WA (i)
3000m
9:25.63-Feb 13Husky Classic, Dempsey Indoor, Seattle, WA (i)
Mile
4:55.29-Jan 30UW Invite/Mile City

2025

3 performances
DisciplineResultWindDateCompetitions
3000m
9:31.65-Feb 15Husky Classic, Dempsey Indoor, Seattle, WA (i)
3000m
9:31.65-Feb 14Husky Classic, Dempsey Indoor, Seattle, WA (i)
Mile
4:59.29-Jan 182025 UW Preview/Mile City

Honours

No medals

FAQ

Frequently asked questions

What is Cassidy Armstrong's Mile personal best?

Cassidy Armstrong's Mile personal best is 4:48.87, set on Jun 7, 2026 in Renton Memorial Stadium, Renton, WA (USA).

Which events does Cassidy Armstrong compete in?

Cassidy Armstrong competes in the Mile.

How did Cassidy Armstrong perform in 2026?

2026 season best: 4:48.87, set on Jun 7, 2026 in Renton Memorial Stadium, Renton, WA (USA). Last competition: Brooks PR Invitational on Jun 7, 2026, 4:48.87.