Mason Louis

United StatesUnited StatesActive
Events
400 m

Mason Louis is a United States sprinter. He competes primarily in the 200m, 400m and 4x400m.

His personal bests include 20.87 in the 200m, 45.85 in the 400m, 3:00.99 in the 4x400m, 3:03.87 in the 4x400Metre and 3:04.21 in the 4x400Metre. He is currently active on the international athletics circuit, representing United States.

Personal best · 400 m45.85
2026 season best45.85May 15, 2026 · Ed Weir Outdoor Track, Lincoln, NE
2026 season best
Last competitionNCAA Division I East First Rounds, Un. of Kentucky Outdoor Track Facility, Lexington, KYMay 29, 2026 · 3:00.99
NCAA Division I East First Rounds, Un. of Kentucky Outdoor Track Facility, Lexington, KY

As of Nov 12, 2026: 400 m 45.85, 2026 season best 45.85 (May 15, 2026, Ed Weir Outdoor Track, Lincoln, NE (USA)) · Last competition: NCAA Division I East First Rounds, Un. of Kentucky Outdoor Track Facility, Lexington, KY, May 29, 2026, 3:00.99

Personal bests

WA points calculator →
DisciplineResultAll-time2026
200mFL 2024United States 200 m all-time list20.871,087 pts––
400mNE 2026United States 400 m all-time list45.851,122 pts–#324
4x400mKY 2026United States 4 × 400 m all-time list3:00.99–#102
4x400MetreIndoorIN 20263:03.87–#52
4x400MetreTX 20263:04.21–#17
60m20217.09894 pts––

Progression

Compare me
SeasonDisciplineResultWindDateCompetitions
2026400m 45.85–May 15, 2026Big Ten Outdoor Track & Field Championships
2026400m-short-track Indoor46.62–Feb 27, 2026Big Ten Conference Indoor Track & Field Championships
2026400m-short-track 46.78–Jan 23, 2026Stan Scott Invite
2026600m Indoor1:17.87–Jan 9, 2026UK Rod McCravy Memorial
2026600m-short-track 1:17.87–Jan 9, 2026UK Rod McCravy Memorial
2026600m-short-track Indoor1:17.87–Jan 9, 2026UK Rod McCravy Memorial
20264x400m 3:00.99–May 29, 2026NCAA Division I East First Rounds, Un. of Kentucky Outdoor Track Facility, Lexington, KY
20264x400Metre Indoor3:03.87–Feb 28, 2026Big Ten Conference Indoor Track & Field Championships
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FAQ

Frequently asked questions

Mason Louis's 400 m personal best is 45.85, set on May 15, 2026 in Ed Weir Outdoor Track, Lincoln, NE (USA).

Mason Louis competes in the 400 m.

2026 season best: 45.85, set on May 15, 2026 in Ed Weir Outdoor Track, Lincoln, NE (USA). Last competition: NCAA Division I East First Rounds, Un. of Kentucky Outdoor Track Facility, Lexington, KY on May 29, 2026, 3:00.99.