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Sierra WILLIAMS
800m
400m
 Australia
Born02 JUN 2009 (17)
Sierra's code15184660
Current World Rankings
#694 Woman's 800m, #1116 Woman's 400m
Personal bests
resultResult
2:07.57
dateDate
06 DEC 2025
scoreScore
1031
competitionCompetition & venue
Lakeside Stadium, Melbourne (AUS)
resultResult
55.50
dateDate
19 MAY 2026
scoreScore
995
competitionCompetition & venue
Arafura Stadium, Darwin (AUS)
resultResult
3:49.40
dateDate
17 APR 2026
scoreScore
980
competitionCompetition & venue
QSAC State Athletics Facility, Nathan, Brisbane (AUS)
resultResult
3:32.78
dateDate
07 DEC 2025
scoreScore
957
competitionCompetition & venue
Lakeside Stadium, Melbourne (AUS)
* Not legal
Season’s bests (2026)
* Not legal
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