Gretchen Walsh Breaks Own World Cup Series Record With 53.10 100 Fly

2025 WORLD AQUATICS SWIMMING WORLD CUP – Toronto

• October 23-25, 2025
• Toronto, Canada
• SCM (25 meters)
• Meet Central
• Psych Sheets
• Live Results
• Recaps
  • Prelims: Day 1 | Day 2 | Day 3
  • Finals: Day 1 | Day 2 | Day 3

Women’s 100 Butterfly — Final

• World Record: 52.71 — Gretchen Walsh, United States (2024)
• World Junior Record: 55.10 — Mizuki Hirai, Japan (2025)
• World Cup Record: 53.69 — Gretchen Walsh, United States (2025)
• Triple Crown Contender: Gretchen Walsh (USA)

Top 8 Finishers:

1. Gretchen Walsh (USA) – 53.10 ** WC Record
2. Alexandria Perkins (AUS) – 55.11
3. Roos Vanotterdijk (BEL) – 56.16
4. Brittany Castelluzzo (AUS) – 56.74
5. Laura Lahtinen (FIN) – 56.81
6. Mary-Sophie Harvey (CAN) – 57.30
7. Marie Wattel (FRA) – 57.38
8. Hazel Ouwehand (NZL) – 57.49

Gretchen Walsh broke her own World Cup Series record in the 100 butterfly with a 53.10. That broke her own record of a 53.69 that she swam at the first stop back in Carmel two weeks ago.

Split Comparison

Walsh was faster tonight compared to Carmel on all three of the first 25s. She faded a bit coming home but was still way under record pace. She was only 0.39 seconds off her own World Record of a 52.71 that she swam last December at the 2024 World Championships.

With her swim tonight, she now holds the top 7 SCM 100 butterfly performances all-time. No one else has been under 54 seconds as Canada’s Maggie MacNeil sits at #2 all-time with a 54.05.

All-Time Top Performances, Women’s SCM 100 Fly

1. Gretchen Walsh, 52.71 (2024)
2. Gretchen Walsh, 52.87 (2024)
3. Gretchen Walsh, 53.10 (2025)
4. Gretchen Walsh, 53.24 (2024)
5. Gretchen Walsh, 53.69 (2024)
6. Gretchen Walsh, 53.72 (2025)
7. Gretchen Walsh, 53.83 (2025)
8. Maggie MacNeil, 54.05 (2022)

Walsh’s swim tonight earned her the triple crown in the event (a $10,000 bonus) and she sits at the top of the individual World Cup rankings right now with 177.3 points.