Audrey Derivaux Posts 4:01.84 400 IM, Remains #3 Performer in 15-16 Age Group

2025 SPEEDO WINTER JUNIOR CHAMPIONSHIPS – EAST

• December 10-13, 2025
• Indianapolis, Ind.
  • Prelims: 10 a.m. EST
    • Wednesday (1000 free): 1 p.m. EST
  • Finals: 5 p.m. EST
    • Wednesday (relays): 4 p.m. EST
• SCY (25 yards)
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  • Prelims: Day Two | Day Three
  • Finals: Day One | Day Two | Day Three

GIRLS’ 400 IM – Finals

• Meet Record: 3:57.02, Katie Grimes – 2022
• 13-14 NAG Record: 4:06.95, Kayla Han – 2022
• 15-16 NAG Record: 3:57.02, Katie Grimes – 2022
• 17-18 NAG Record: 3:56.59, Bella Sims – 2022

Top 8 Finishers

1. Audrey Derivaux (JW) — 4:01.83
2. Emerson Callis (QSTS) — 4:10.35
3. Vivian Moulson (CRIM) — 4:11.99
4. Ellie Clarke (CSC) — 4:13.53
5. Sydney Hardy (SYS) — 4:13.85
6. June Delmar (MAC) — 4:15.82
7. Avery Klamforth (MAC) — 4:16.39
8. Carly Afanasewicz (PAC) — 4:16.81

En route to a dominating win that she led from start to finish, Audrey Derivaux shaved 1.48 seconds off her PB of 4:03.31 in the 400 IM. The #1 recruit in the class of 2027 already owned the #3 time in her age group (4:03.31), which she posted at the 2025 Speedo Southern Premier back in February.

All-Time Rankings, Girls’ 15-16 400 IM (SCY)

1. Katie Grimes (Sandpipers of Nevada), 3:57.02  – 2022
2. Dagny Knutson (Minot YMCA Swim Club), 4:00.62 – 2008
3. Audrey Derivaux (Jersey Wahoos), 4:01.83 – 2025
4. Katie Hoff (North Baltimore Aquatic Club), 4:03.46 – 2005
5. Bella Sims (Sandpipers of Nevada), 4:03.67 – 2021
6. Meghan Small (York YMCA), 4:03.96 – 2015
7. Kayla Han (La Mirada Armada), 4:04.44 – 2024
8. Elizabeth Beisel (Bluefish Swim Club), 4:04.59 – 2008
9. Jasmine Tosky (Palo Alto Stanford Aquatics), 4:04.65 – 2011
10. Ella Eastin (SOCAL Aquatics Association), 4:05.25 – 2013

Derivaux has been on fire this week, swimming a 1:53.87 to win the 200 IM crown last night to record the #2 time in her age group, just half a second off Teagan O’dell’s NAG record. The Texas commit is coming off a successful summer where she won 3 golds and a silver at the World Junior Championships. The 400 IM was the only event she made a final in and did not medal, taking 4th in a time of 4:39.67.

Split Comparison:

There wasn’t a specific area that Derivaux improved upon in this swim compared to her previous best; rather, she was marginally faster on pretty much every leg, which allowed her to chip away at her old PB each 50.

Tomorrow, Derivaux is set to swim the tough 200 back/200 fly double—both events that she reaped gold in this summer at World Juniors. Though Derivaux does not age up until August of 2026, will take an aim at the NAG records in the two events at her final Winter Junior Championships in the 15-16 age group, both of which are held by future Texas training partner Reagan Smith.