Sierra Williams

AustraliaAustraliaActive
Born
Jun 2, 2009 (17 years old)
Events
800 m

Sierra Williams is a Australia sprinter, born on June 2, 2009. She competes primarily in the 400m, 800m and 4x400m.

Her personal bests include 55.50 in the 400m, 2:07.57 in the 800m, 3:49.40 in the 4x400m and 3:32.78 in the 4x400Metre. She is currently active on the international athletics circuit, representing Australia.

Personal best · 800 m2:07.57
2026 season best2:08.38Feb 28, 2026 · Domain Athletic Centre, Hobart
2026 season best
Last competitionQueensland All-Schools ChampionshipsOct 1, 2026 · 2:09.24
Queensland All-Schools Championships

As of Nov 14, 2026: 800 m 2:07.57, 2026 season best 2:08.38 (Feb 28, 2026, Domain Athletic Centre, Hobart (AUS)) · Last competition: Queensland All-Schools Championships, Oct 1, 2026, 2:09.24 · 17 years old

Personal bests

WA points calculator →
DisciplineResultAll-time
400mDarwin 2026Australia 400 m all-time list55.50995 pts–
800mMelbourne 2025Australia 800 m all-time list2:07.571,031 pts–
4x400mBrisbane 2026Australia 4 × 400 m all-time list3:49.40–
4x400MetreMelbourne 20253:32.78–

Progression

SeasonDisciplineResultWindDateCompetitions
2026400m 55.50–May 19, 2026Oceania U18 Championships, Arafura Stadium, Darwin
2026800m 2:08.38–Feb 28, 2026Hobart Track Classic
20264x400m 3:49.40–Apr 17, 2026Australian U18 Championships
2025400m 55.85–Oct 5, 2025Queensland All-Schools Championships
2025800m 2:07.57–Dec 6, 2025Australian All Schools Championships, Lakeside Stadium, Melbourne - U18 Events
20254x400Metre 3:32.78–Dec 7, 2025Australian All Schools Championships, Lakeside Stadium, Melbourne - U18 Events
2024400m 58.63–Nov 3, 2024Queensland All-Schools Championships, Queensland Sport and Athletics Centre, Nathan, Brisbane
FAQ

Frequently asked questions

Sierra Williams's 800 m personal best is 2:07.57, set on Dec 6, 2025 in Lakeside Stadium, Melbourne (AUS).

Sierra Williams competes in the 800 m.

2026 season best: 2:08.38, set on Feb 28, 2026 in Domain Athletic Centre, Hobart (AUS). Last competition: Queensland All-Schools Championships on Oct 1, 2026, 2:09.24.