Most Improved Iowa Boys 400m Marks Compared to 2025

Apr 17, 2026

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

Comparing 2026 season to 2025 season

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Rank	Improved	Athlete/Team	Class	2025 PR	2026 PR
1	-15.12	Blaise Echevarria Southwest Valley High School	2028	1:21.71	1:06.59
2	-10.79	Aiden Carter Centerville High School	2028	1:13.80	1:03.01
3	-9.91	Carter Davis Central Decatur High School	2028	1:20.44	1:10.53
4	-9.31	Spencer Goettemoeller Mount Ayr High School	2028	1:23.68	1:14.37
5	-7.13	Jace Marco Sibley-Ocheyedan High School	2028	1:05.41	58.28
6