Sienna Toohey Becomes Youngest Australian Woman Ever Under 1:07 in 100 Breaststroke

2025 AUSTRALIAN SWIMMING TRIALS

16-year-old Sienna Toohey became the youngest Australian woman to break 1:07 in the 100 breaststroke during tonight’s final, finishing first in 1:06.55 to earn her spot on the World Championships roster. 

Toohey has been taking Australian Swimming by storm, filling a large gap in the breaststroke events. In April, she swam 1:07.04 to break Australian legend Leisel Jones’ 23-year-old age group record of 1:07.31. Toohey also holds the 15-year-old age group record at 1:07.01 from last year’s Olympic Trials where she finished 3rd overall.

Women’s 100 Breaststroke – Finals

  • World Record: 1:04.13 – Lilly King, USA (2017)
  • Australian Record: 1:05.09 – Leisel Jones, (2006)
  • AllComers Record: 1:05.09 – Leiel Jones, AUS (2006)
  • 2024 Trials Winner: Jenna Strauch – 1:06.90
  • SwimAustralia Qualifying Time: 1:06.87

RESULTS:

  1. Sienna Toohey – 1:06.55
  2. Ella Ramsay – 1:06.86
  3. Sienna Harben – 1:07.02
  4. Hayley Mackinder – 1:07.61
  5. Tara Kinder – 1:08.06
  6. Lily Koch – 1:08.53
  7. Tilly King – 1:08.66
  8. Mia O’Leary – 1:09.85

With this swim, Toohey now finds herself on both the World Championships team and the Junior Worlds team. While some countries do not allow athletes to compete at both championships, Australia does not have any such restrictions. In 2023, fellow Australian Flynn Southam competed in the individual 100 meter freestyle at both meets.

Toohey highlights a new era of Australian breaststrokers as one of only two finalists from last year’s trials who returned (the other being 2nd place finisher Ella Ramsay). At last summer’s Olympics, Australia did not put a single swimmer into the 100 breaststroke semi-final with their only qualifier Jenna Strauch finishing 22nd overall in 1:07.27. Toohey’s time tonight would have qualified her 13th for the semi-finals. It also sits at 14th in the world this season which has significant implications for Australia’s medley relay which won the silver medal last summer with Strauch on the breaststroke leg.

2024-2025 LCM Women 100 Breast

AnnaGER
ELENDT
07/29
1:05.19
2Kate
Douglass
USA1:05.2707/29
3Angharad
Evans
GBR1:05.3704/20
4Tang
Qianting
CHN1:05.5705/19
5Anita
Bottazzo
ITA1:05.6107/28
6Satomi
Suzuki
JPN1:05.7807/29
7Eneli
JEFIMOVA
EST1:05.8105/25
8Evgenia
CHIKUNOVA
RUS1:05.9707/28
9Mona
Mc Sharry
IRL1:05.9907/28
10Lisa
ANGIOLINI
ITA1:06:0104/13
11Lilly
King
USA1:06.0206/06
12Alina
ZMUSHKA
NAA1:06.0907/28
13Kotryna
Teterevkova
LTU1:06.1707/28
14Arianna
CASTIGLIONI
ITA1:06.2204/13
15REONA
AOKI
JPN1:06.4403/21
View Top 26»

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7 Comments
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GOATKeown
1 year ago

She becomes the 9th fastest junior of all time. She was half a body length ahead at the turn but popped up half a body length behind. If she can work on her underwaters that’s a 1:05 easily

Oceanian
1 year ago

;Our’ Sienna seemed to have plateaued for the past 6 months so great to see her have a big jump.

Would be lovely to see her log-on here again and give us her thoughts.

Troyy
Reply to  Oceanian
1 year ago

Probably she was just saving her best for trials

GOATKeown
Reply to  Troyy
1 year ago

lol while funny, actually impersonating a swimmer with their full name probably shouldn’t be allowed since some of them do comment on here

Troyy
Reply to  GOATKeown
1 year ago

Sienna has commented here before

SNygans01
Reply to  GOATKeown
1 year ago

Intriguing how a 16yo in Australia today would employ the archaic phrase ‘playing possum’!

Olivia Smoliga 27.33 AR
1 year ago

Ella Ramsay, not Ella Welch