William Seitz
United StatesActive- Events
- 400 m · 300 Metres
William Seitz is a United States sprinter. He competes primarily in the 100m, 200m and 200m.
His personal bests include 10.87 in the 100m, 22.34 in the 200m, 22.34 in the 200m, 47.94 in the 400m and 48.55 in the 400m. He is currently active on the international athletics circuit, representing United States.
Personal best · 400 m48.55
2026 season best48.55May 9, 2026 · Carnie Smith Stadium - Prentice Gudgen Track, Pittsburg, KS
Personal best · 300 Metres34.69
Last competitionPitt State "The Almost Last Chance" InvitationalMay 9, 2026 · 48.55
As of Oct 29, 2026: 400 m 48.55, 300 Metres 34.69, 2026 season best 48.55 (May 9, 2026, Carnie Smith Stadium - Prentice Gudgen Track, Pittsburg, KS (USA)) · Last competition: Pitt State "The Almost Last Chance" Invitational, May 9, 2026, 48.55
Personal bests
WA points calculator →DisciplineResultAll-time2026
200mIndoorKS 202622.34940 pts––
400mIndoorKS 202647.941,046 pts–#354
4x400mKS 20263:13.51––
* Wind-assisted (> 2.0 m/s)
Progression
| Season | Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|---|
| 2026 | 60m Indoor | 7.31 | – | Feb 13, 2026 | 11th Annual Russ Jewett Indoor Gorilla Classic |
| 2026 | 100m | 10.87 | +2.6 | Apr 4, 2026 | 18th Annual David Suenram Gorilla Classic |
| 2026 | 200m | 22.34 | – | Jan 31, 2026 | Pittsburg State University Invitational |
| 2026 | 200m Indoor | 22.53 | – | Feb 13, 2026 | 11th Annual Russ Jewett Indoor Gorilla Classic |
| 2026 | 400m Indoor | 47.94 | – | Feb 13, 2026 | 11th Annual Russ Jewett Indoor Gorilla Classic |
| 2026 | 400m | 48.55 | – | May 9, 2026 | Pitt State "The Almost Last Chance" Invitational |
| 2026 | 600Yards Indoor | 1:09.97 | – | Mar 1, 2026 | MIAA Indoor Championships |
| 2026 | 4x400m | 3:13.51 | – | Jan 23, 2026 | Rumble in the Jungle Invitational |