MileSplit Staff Feb 18, 2026 PRO See the rest of this article Access the complete article with MileSplit PRO. Subscribe to keep reading Already a subscriber? Log in. Ranking the top 400m performances delivered by Iowa-based junior boys during the 2026 Indoor Season. 400 Meter Dash Rank Time Athlete/Team Class Meet / Date 1 53.46 Kash Fischer Unattached - IA 2027 Jumper Athletics Invitational Jan 10, 2026 2 54.69 Isaiah Wheeldon XLR8 IOWA TRACK CLUB 2027 Mizzou HS Distance & Sprint Elite Feb 6, 2026 3 59.23 Ivan Shannon PCM High School 2027 Bearcat All Ages Open #1 Jan 10, 2026