The women's 400 metres at the 2026 World Athletics U20 Championships was held at Hayward Field in Eugene, United States on 6 and 7 August 2026.

Records U20 standing records prior to the 2026 World Athletics U20 Championships were as follows: Record Athlete & Nationality Mark Location Date World U20 Record 49.42 Tokyo, Japan 27 August 1991 Championship Record 50.50 Barcelona, Spain 13 July 2012 World U20 Leading 50.83 Lexington, United States 30 May 2026

Results Round 1 Round 1 took place in the morning session on 6 August 2026.

Heat 1 Place Lane Athlete Nation Time Notes 1 7 Anastazja Kuś 52.55 2 8 Shari Hurdman 53.03 3 9 Luna Fischer 53.17 4 2 Zhou Wenyu 54.31 5 5 Sasha Salwonchuk 54.87 6 3 Manca Marčelja 55.29 7 4 Isadora Justiniana 55.50 8 6 55.61

Heat 2 Place Lane Athlete Nation Time Notes 1 6 Lenka Gymerská 53.54 2 8 Matilde Abelli 53.88 3 4 Shameika McLean 53.95 4 9 Génesis Nicole Cañola 54.43 5 3 Joelle Hausammann 55.33 6 2 55.47 7 7 Dianelis Rivera 55.51 8 5 Nerina Pápai 56.53

Heat 3 Place Lane Athlete Nation Time Notes 1 3 Ataja Stephane-Vazquez 51.44 2 8 Casey Musgrave 53.25 3 9 Laura Frattaroli 53.85 4 6 Teodora Popović 54.00 , 5 7 Kettia Ambrose 54.36 6 2 Madeleine Waddell 54.48 7 1 Lucia Bortlíková 55.20 8 4 Isabel Quiroz 55.60 9 5 Ji-woo Choi 57.35

Heat 4 Place Lane Athlete Nation Time Notes 1 5 Tianna Springer 52.39 2 7 Maša Medjimurec 53.72 3 8 Eni Kuske 53.97 4 6 53.97 5 4 Daniela Astrid Castro 55.19 6 9 Sofya Kidenko 56.29 7 3 Sara Cuesta 57.12 8 2

Heat 5 Place Lane Athlete Nation Time Notes 1 3 Alice Hill 53.82 2 7 Tyhra Charles 54.02 3 2 Keyezra Thomas 54.33 4 4 Kaliyah Jones 54.65 5 6 Christi Loggenberg 54.83 6 9 Mia de Jager 55.31 7 5 Kayla Charles 55.89

Heat 6 Place Lane Athlete Nation Time Notes 1 3 Daniellia Dixon 53.19 2 7 Davida Strong 53.26 3 5 53.31 , 4 4 Kadia Rock 53.32 5 2 Charlotte Bosma 54.76 6 9 Hemily de Jesus 56.16 7 8 Alexis Roberts 56.16 8 6 Szonja Keszthelyi 56.24

Heat 7 Place Lane Athlete Nation Time Notes 1 2 Clara Adams 53.54 2 4 Shade Laporal 54.04 3 6 Faith Ezechukwu 54.38 4 5 Annette McGrath 55.08 5 1 Alisson Judith Martinez 55.53 6 7 55.55 7 8 Judith Sintila 56.16 8 9 Silvanilda Carina Delgado Gomes 56.61 9 3 Kyah Hyson 57.58

Semi-finals The semi-finals took place in the afternoon session on 6 August 2026.

Heat 1 Place Lane Athlete Nation Time Notes 1 5 Anastazja Kuś 52.43 2 7 Clara Adams 52.81 3 2 Kadia Rock 53.25 4 4 Davida Strong 53.37 5 6 Daniellia Dixon 53.77 6 8 Luna Fischer 53.96 7 1 Génesis Nicole Cañola 54.00 8 3 Faith Ezechukwu 54.68 9 9 54.97

Heat 2 Place Lane Athlete Nation Time Notes 1 6 Ataja Stephane-Vazquez 51.76 2 5 Alice Hill 53.28 , 3 7 Casey Musgrave 53.51 4 9 Shameika McLean 54.24 5 4 Matilde Abelli 54.27 6 2 Zhou Wenyu 54.38 7 8 Tyhra Charles 54.50 8 3 Eni Kuske 54.53 9 1 Teodora Popović 55.45

Heat 3 Place Lane Athlete Nation Time Notes 1 5 Tianna Springer 52.48 2 7 Lenka Gymerská 53.05 3 4 Maša Medjimurec 53.09 4 6 Shari Hurdman 53.44 5 8 Shade Laporal 54.05 6 2 Kettia Ambrose 54.82 7 1 54.86 8 3 Keyezra Thomas 57.84 9 9 Laura Frattaroli

Final The final took place in the afternoon session on 7 August 2026.

Place Lane Athlete Nation Time Notes 6 Anastazja Kuś 51.06 5 Ataja Stephane-Vazquez 51.36 7 Tianna Springer 51.76 4 4 Lenka Gymerská 52.37 5 3 Maša Medjimurec 52.37 6 1 Kadia Rock 52.42 7 8 Clara Adams 52.76 8 2 Casey Musgrave 53.07 9 9 Alice Hill 53.16

References