Giselle LOSSE

United StatesUnited StatesActive
Born
Jan 1, 2008 (18 years old)
Events
400 m · 300 Metres Short Track

Giselle LOSSE is a United States sprinter, born on January 1, 2008. She competes primarily in the 100m, 200m and 400m.

Her personal bests include 12.46 in the 100m, 24.80 in the 200m, 54.81 in the 400m, 3:43.69 in the 4x400m and 40.08 in the 300m. She is currently active on the international athletics circuit, representing United States.

Personal best · 400 m54.81
2026 season best55.50Apr 4, 2026 · Kirani James Athletic Stadium, St. George's
2026 season best
Personal best · 300 Metres Short Track40.08
Last competitionCARIFTA GamesApr 4, 2026 · 55.50
CARIFTA Games

As of Nov 14, 2026: 400 m 54.81, 300 Metres Short Track 40.08, 2026 season best 55.50 (Apr 4, 2026, Kirani James Athletic Stadium, St. George's (GRN)) · Last competition: CARIFTA Games, Apr 4, 2026, 55.50 · 18 years old

Personal bests

WA points calculator →
DisciplineResultAll-time
100mTX 2021United States 100 m all-time list12.46*902 pts–
200mTX 2021United States 200 m all-time list24.80960 pts–
400mPA 2025United States 400 m all-time list54.811,020 pts–
4x400mTX 2021United States 4 × 400 m all-time list3:43.69–
300mIndoorVA 202540.08999 pts–
300m-short-trackIndoorVA 202540.08999 pts–

* Wind-assisted (> 2.0 m/s)

Progression

SeasonDisciplineResultWindDateCompetitions
2026400m 55.50–Apr 4, 2026CARIFTA Games
2025300m-short-track Indoor40.08–Jan 18, 2025Virginia Showcase
2025300m Indoor40.08–Jan 18, 2025Virginia Showcase
2025400m 54.81–Jun 21, 2025New Balance Nationals Outdoors
20254x200Metre 1:41.28–Apr 5, 2025Pepsi Florida Relays, Percy Beard Track, Gainesville, FL - Olympic Development
2022200m 25.32-0.4Aug 3, 2022Marcus T. Johnson Track, Greensboro, NC (USA)
2021100m 12.46+2.2Aug 3, 2021Humble HS, Humble, TX (USA)
2021200m 24.80+1.4Aug 4, 2021Humble HS, Humble, TX (USA)
FAQ

Frequently asked questions

Giselle LOSSE's 400 m personal best is 54.81, set on Jun 21, 2025 in Franklin Field, Philadelphia, PA (USA).

Giselle LOSSE competes in the 400 m and 300 Metres Short Track.

2026 season best: 55.50, set on Apr 4, 2026 in Kirani James Athletic Stadium, St. George's (GRN). Last competition: CARIFTA Games on Apr 4, 2026, 55.50.