Most Improved Michigan Girls 400m Marks Compared to 2025

May 29, 2026

This content requires a MileSplit Pro plan.
Join Now and select any plan for instant access!

MileSplit Pro Join Now

Improvement Rankings: Top Michigan Girls 400m marks compared to their season’s best performances from 2025.

Most Improved - 400 Meter Dash

Comparing 2026 season to 2025 season

...

Rank	Improved	Athlete/Team	Class	2025 PR	2026 PR
1	-31.05	Larena Adams Detroit Martin Luther King Jr.	2028	1:51.00	1:19.95
2	-27.56	Regina Diosdado Bloomfield Hills Cranbrook-Kingswood	2026	1:43.61	1:16.05
3	-22.18	Lauren Harris Harper Woods Chandler Park Academy	2028	1:35.46	1:13.28
4	-20.82	Jenna Dunn Birmingham Groves	2028	1:48.56	1:27.74
5	-19.09	Sirina Bery Ann Arbor Greenhills	2028	1:30.26	1:11.17