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NCAA and American Records Fall As Gretchen Walsh Swims To 46.97 In 100 Butterfly

2025 NCAA Division I Women’s Swimming and Diving Championships

Women’s 100 Butterfly

TOP 8 FINISHERS:

  1. Gretchen Walsh (Virginia), 46.97
  2. Torri Huske (Stanford), 48.90
  3. Emma Sticklen (Texas), 49.27
  4. Miranda Grana (Indiana), 50.01
  5. Gabi Albiero (Louisville), 50.69
  6. Abby Arens (Texas), 50.90
  7. Ella Welch (Louisville), 50.93
  8. Olivia Peoples (Florida), 51.09

Gretchen Walsh became the first swimmer to ever break the 47-second mark in the 100 butterfly, swimming to a 46.97. That broke her own NCAA, American, US Open, and Meet Records. She previously held the marks at a 47.21 as she broke her own NCAA and American Record in prelims.

Split Comparison

Finals 2025 NCAAs Prelims 2025 NCAAs Midseason 2024
2024 NCAAs Finals
25 9.80 9.93 9.97 9.94
50 21.61 (11.81) 21.86 (11.93) 21.90 (11.93) 21.75 (11.81)
75 34.12 (12.51) 34.39 (12.53) 34.43 (12.53) 34.29 (12.54)
100 46.97 (12.85) 47.21 (12.82) 47.35 (12.92) 47.42 (13.13)

Walsh was out under record pace touching in a 9.80 at the 25 mark. That is also her fastest first 25 in any swim ever including the first 25 of her 50 free where she flips to her feet.

Walsh now holds the eight fastest 100 butterfly times of all-time. No other woman has been sub-48 seconds and Walsh now has gotten under the 47-second mark.

Top 100 Fly Performances All-Time

  1. Gretchen Walsh, 46.97, 2025 NCAA Finals
  2. Gretchen Walsh, 47.21, 2025 NCAA Prelims
  3. Gretchen Walsh, 47.35, 2024 Midseason
  4. Gretchen Walsh, 47.48, Eddie Reese Showdown
  5. Gretchen Walsh, 47.42, 2024 NCAA Finals
  6. Gretchen Walsh, 48.25, 2024 ACCs
  7. Gretchen Walsh, 48.26, 2024 NCAA Prelims
  8. Gretchen Walsh, 48.43, Virginia vs UNC Dual

Race Video

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"we've got a boilover!"
14 days ago

Interesting comparison of Men’s SCM world records vs Women’s SCY world bests. Men’s slightly faster in most events except the IM’s and 100 back/fly/free. The event most ahead on the women’s side: 100 fly. How’s that for a model to show how dominant Walsh is, and how impressive still Ella Eastin’s swim was!

50 free. 19.90 / 20.37
100 Free 44.84 / 44.83
200 free 1:38.91 / 1:39.10
100 back 48.33 / 48.10
200 back 145.63 / 1:46.87
100 breast 55.28 / 55.73
200 breast 2:00.16 / 2:01.29
100 fly 47.71 / 46.97
200 fly 1:46.85 / 1:48.33
200 IM 1:48.88 / 1:48.37
400 IM 3:54.81 / 3:54.60

4*50 free… Read more »

kristen
14 days ago

Is there video anywhere?

He Gets It Done Again
15 days ago

46.97 would have won at men’s ncaas as recently as 1994. It would have qualified for men’s ncaas as recently as 2008. It would have won men’s d3 as recently as 2018, her freshman year of high school.

saltie
15 days ago

For context, as ridiculous as this swim is, it’s 3.08% better than Kate Douglass.

Dressel’s 17.63 was 4.55% better than the second best ever by Cesar Cielo

Let that sink in

jeff
Reply to  saltie
15 days ago

comparing to 2nd fastest is definitely an easily digestible heuristic, but definitely not the end all be all especially given that it’ll be subject to more variance than comparing to other marks. There’s been a lot of “star power” in the NCAA 100 fly in the several years, much more than in the several years leading up to 2018 in the men’s 50 free

smithbotrc
15 days ago

That would have medaled at Winter Juniors East for BOYS. Tied for 3rd with Max Buff.

This guy
15 days ago

How do we compare this to Caleb’s 100 fly? More ridiculous?

jeff
Reply to  This guy
15 days ago

This swim easily qualifies for the 100 free A-final (would’ve finished 4th in finals last year). If you look at the men’s times from last year, it took a 41.3 to qualify for the A-final and 4th/5th were 40.61 and 40.66

I don’t know how accurate of a comparison that is, but the fact that this could convert to a 40 high/41 men’s 100 fly by this metric is ridiculous

Last edited 15 days ago by jeff
jeff
Reply to  jeff
15 days ago

If you use the 2018 numbers instead (“swimflation adjusted”), it took 41.82 to qualify for the A-final and a 41.51 to place 4th, so even conservatively, this swim is solidly like a 41 mid men’s time?
Caeleb himself would’ve been 27th in prelims of the 100 free in 2018; for comparison, Kate Douglass and Maggie MacNeil would’ve been 31st and 33rd in 2023

anonymous
Reply to  This guy
15 days ago

Way more ridiculous than Dressel’s. She has a bigger margin between her and the second fastest ever, and the pedigree of #2-4 (Douglass, MacNeil, Huske) on the all time list behind her is unreal. That trio is a full .5 ahead of the fifth fastest woman ever. But their swims look pedestrian next to Gretchen.

Swimfan27
15 days ago

Greatest. SCY swimmer. Of all time.

saltie
Reply to  Swimfan27
15 days ago

This swim puts Gretchen at 3.08% faster than KD

Caeleb’s 50 free was 4.55% faster than Cielo

Swimfanjacoby
Reply to  saltie
14 days ago

I fully agree with you salty, there is so much current event bias

Hmm
Reply to  saltie
13 days ago

KD swam her time within the last couple years. Cielo’s time was 8 years old. To be as far ahead as she is, and that far ahead of a currently active star powered field, is unprecedented. She just beat the 100m fly Olympic gold medalist by 2 full seconds!

Lisa
Reply to  Swimfan27
15 days ago

She’s definitely the greatest short course sprinters in meters and yards.

Swimorr
15 days ago

Australia is silent….. just how we like them.

Swimmer
Reply to  Swimorr
15 days ago

no Australian is denying how great she is or will continue to be but like everywhere else outside of America we don’t care what times people do in yards. She’s the WR holder and greatest 100 flyer in both SCM and LCM you know real swimming distances that the rest of the world care about yards outside your trigger happy country 🤣

UVA #1 FAN!!!!!
Reply to  Swimmer
15 days ago

Someone’s angry…

Swimmer
Reply to  UVA #1 FAN!!!!!
15 days ago

No anger at all, if you read my response I acknowledge how good of a swimmer she is and she’s likely only going to get quicker all I said is that people outside of America generally don’t care about yards which is true considering the rest of the world swims metres. If NCAA were in metres it’d likely receive more international attention however I know that’s extremely difficult to make possible due to the high number of ext only pools in the states

Miss M
Reply to  Swimmer
15 days ago

THIS.

I love watching GW swim, but yards times mean nothing to me.

About Anya Pelshaw

Anya Pelshaw

Anya has been with SwimSwam since June 2021 as both a writer and social media coordinator. She was in attendance at the 2022, 2023, and 2024 Women's NCAA Championships writing and doing social media for SwimSwam. She also attended 2023 US Summer Nationals as well as the 2024 European Championships …

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