Whittaker produced a 2025 world-leading time of 49.24 in breaking the previous American and collegiate record of 49.48 set at the 2023 NCAA Indoor by Razorback Britton Wilson.
Closing out the meet with the 4 x 400m relay, Whittaker supplied an anchor leg split of 49.70 as the Razorbacks won with a 3:25.20. The relay leg by Whittaker and the winning time both rank No. 5 on all-time indoor world lists.
Whittaker also joined a select group of sprinters who have won the NCAA Indoor 400m and been on the winning 4 x 400m relay.
The previous sprinter to achieve the feat was Wilson in 2023 with her 49.48 400m win along with a world best 49.19 anchor on the Razorbacks world best winning time of 3:21.75.
NCAA Indoor | 400 & 4 x 400 relay sweep
Year | School | ATHLETE
2025 | Arkansas | Isabella Whittaker
2023 | Arkansas | Britton Wilson
2018 | USC | Kendall Ellis
2016 | Texas | Courtney Okolo
2015 | Texas | Courtney Okolo
2014 | Oregon | Phyllis Francis
2011 | Texas A&M | Jessica Beard
2007 | South Carolina | Natasha Hastings
2004 | Texas | Sanya Richards
2001 | South Carolina | Demetria Washington
1999 | Texas | Suziann Reid
1994 | Seton Hall | Flirtisha Harris
1991 | Arizona State | Maicel Malone
1986 | Tennessee | Ilrey Oliver (500m)
