Lily Cooper

United StatesUnited StatesActive
Events
400 m

Lily Cooper is a United States sprinter. She competes primarily in the 400m, Mile and Mile.

Her personal bests include 59.36 in the 400m, 5:38.08 in the Mile, 5:38.08 in the Mile, 4:15.35 in the 4x400m and 4:15.35 in the 4x400m. She is currently active on the international athletics circuit, representing United States.

Personal best · 400 m59.36
2026 season best4:15.35Jan 23, 2026 · Lied Recreation Center, Ames, IA
2026 season best
Last competitionCyclone OpenJan 23, 2026 · 5:38.08
Cyclone Open

As of Nov 14, 2026: 400 m 59.36, 2026 season best 4:15.35 (Jan 23, 2026, Lied Recreation Center, Ames, IA (USA)) · Last competition: Cyclone Open, Jan 23, 2026, 5:38.08

Personal bests

WA points calculator →
DisciplineResultAll-time2026
400mWI 2024United States 400 m all-time list59.36859 pts––
MileIndoorIA 20265:38.08706 pts––
MileIA 2026United States Mile all-time list5:38.08682 pts––
4x400mIndoorIA 20264:15.35–#573
4x400mIA 2026United States 4 × 400 m all-time list4:15.35––

Progression

SeasonDisciplineResultWindDateCompetitions
20264x400m 4:15.35–Jan 23, 2026Cyclone Open
20264x400m Indoor4:15.35–Jan 23, 2026Cyclone Open
2026Mile 5:38.08–Jan 23, 2026Cyclone Open
2026Mile Indoor5:38.08–Jan 23, 2026Cyclone Open
2024400m 59.36–May 3, 2024Outdoor WIAC Championships, UW-Platteville, Platteville, WI
FAQ

Frequently asked questions

Lily Cooper's 400 m personal best is 59.36, set on May 3, 2024 in UW-Platteville, Platteville, WI (USA).

Lily Cooper competes in the 400 m.

2026 season best: 4:15.35, set on Jan 23, 2026 in Lied Recreation Center, Ames, IA (USA). Last competition: Cyclone Open on Jan 23, 2026, 5:38.08.