The women's 800 metres at the 2018 IAAF World U20 Championships was held at Ratina Stadium on 10, 11 and 12 July.

Records Standing records prior to the 2018 IAAF World U20 Championships in AthleticsWorld Junior Record1:54.01Zürich, Switzerland29 August 2008Championship Record2:00.06Bydgoszcz, Poland11 July 2008World Junior Leading2:00.81Gold Coast, Queensland, Australia12 April 2018

Results

Heats Qualification: First 4 of each heat (Q) and the 4 fastest times (q) qualified for the semifinals.

Rank Heat Name Nationality Time Note 1 3 Ayaka Kawata 2:05.08 Q 2 1 Ayano Shiomi 2:05.13 Q 3 5 Diribe Welteji 2:05.18 Q 4 1 Jackline Wambui 2:05.27 Q 5 3 Lydia Jeruto Lagat 2:05.63 Q 6 3 Maeliss Trapeau 2:05.72 Q 7 1 Samantha Watson 2:06.34 Q 8 3 Camille Muls 2:06.41 Q 9 1 Jemima Russell 2:06.84 Q 10 5 Katy-Ann McDonald 2:07.24 Q 11 5 Eloisa Coiro 2:07.31 Q 12 5 Delia Sclabas 2:07.43 Q 13 5 Shaquena Foote 2:07.75 q 14 5 Marharyta Kachanava 2:07.87 q 15 2 Freweyni Hailu 2:08.26 Q 16 2 Carley Thomas 2:08.57 Q 17 2 Gabriela Gajanová 2:08.89 Q 18 3 Federica Cortesi 2:09.27 q 19 5 Jo Keane 2:09.59 q 20 1 Jinlian Tan 2:09.81 21 1 Mia Helene Mørck 2:09.82 22 2 Chrissani May 2:09.88 Q 23 3 Liza Kellerman 2:10.05 24 1 Klara Lukan 2:10.08 25 2 Raquel Meaños 2:10.13 26 2 Freja Wærness 2:10.50 27 4 Caitlyn Collier 2:11.30 Q 28 4 Isabelle Boffey 2:11.43 Q 29 4 Milena Korbut 2:11.52 Q 30 3 Carolina Hernandez-Pita 2:11.52 31 4 Majtie Kolberg 2:11.61 Q 32 4 Sanne Njaastad 2:11.82 33 4 María Lasa 2:12.04 34 2 Aurora Rynda 2:12.31 35 1 Veera Perälä 2:12.38 36 3 Haley Walker 2:12.76 37 4 Shyamali Kumarasingha 2:12.91 38 2 Albina Deliu 2:19.84 5 Linda Philip Mamun

Semifinals Qualification: First 2 of each heat (Q) and the 2 fastest times (q) qualified for the final.

Rank Heat Name Nationality Time Note 1 2 Diribe Welteji 2:01.89 Q 2 1 Freweyni Hailu 2:01.96 Q 3 1 Delia Sclabas 2:02.12 Q, 4 3 Carley Thomas 2:03.19 Q, 5 2 Katy-Ann McDonald 2:03.20 Q, 6 3 Gabriela Gajanová 2:03.36 Q, 7 3 Ayaka Kawata 2:03.37 q 8 1 Jackline Wambui 2:03.44 q, 9 2 Ayano Shiomi 2:03.72 10 3 Caitlyn Collier 2:03.95 11 1 Samantha Watson 2:03.95 12 2 Lydia Jeruto Lagat 2:04.59 13 2 Jemima Russell 2:04.81 14 3 Maeliss Trapeau 2:05.35 15 3 Marharyta Kachanava 2:06.53 16 3 Milena Korbut 2:06.60 17 2 Eloisa Coiro 2:06.85 18 1 Jo Keane 2:06.91 19 1 Shaquena Foote 2:08.02 20 2 Camille Muls 2:08.16 21 1 Federica Cortesi 2:09.85 22 2 Majtie Kolberg 2:10.66 23 3 Chrissani May 2:10.70 24 1 Isabelle Boffey 2:11.49

Final

Rank Lane Name Nationality Time Note 3 Diribe Welteji 1:59.74 8 Carley Thomas 2:01.13 6 Delia Sclabas 2:01.29 4 1 Gabriela Gajanová 2:01.90 5 4 Freweyni Hailu 2:02.80 6 5 Ayaka Kawata 2:03.57 7 7 Katy-Ann McDonald 2:04.08 8 2 Jackline Wambui 2:04.61

References