Most Improved Wyoming Girls 400m Marks Compared to 2025

Mar 27, 2026

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Improvement Rankings: Top Wyoming 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	-4.74	Ariel Hedum Cheyenne South High School	2028	1:25.33	1:20.59
2	-3.43	Madison Zeller Natrona County High School	2028	1:04.38	1:00.95
3	-2.85	Haley Grubb Saratoga High School	2027	1:11.55	1:08.70
4	-2.20	Adelyn Mumma Jackson Hole High School	2028	1:14.34	1:12.14
5	-0.76	Joleigh Shahadey Saratoga High School