The Men's 100 metre backstroke S2 event at the 2020 Paralympic Games took place on 25 August 2021, at the Tokyo Aquatics Centre.
Heats
The swimmers with the top 8 times, regardless of heat, advanced to the final.
Rank Heat Lane Name Nationality Time Notes 1 2 5 Vladimir Danilenko 2:02.07 2 1 4 Alberto Abarza 2:02.28 3 1 5 Roman Bondarenko 2:08.72 4 2 4 Gabriel dos Santos 2:09.73 5 2 3 Kamil Otowski 2:12.80 6 1 3 Jacek Czech 2:14.25 7 1 6 Aristeidis Makrodimitris 2:17.68 8 2 7 Rodrigo Santillán 2:20.41 9 2 2 Cristopher Tronco 2:26.15 10 1 2 Ievgen Panibratets 2:29.46 11 1 7 Richard Mateo Vega 2:38.70 12 2 6 Nikita Kazachiner
Final
Rank Lane Name Nationality Time Notes+100m backstroke final 5 Alberto Abarza 2:00.40 6 Gabriel dos Santos 2:02.47 4 Vladimir Danilenko 2:02.74 4 7 Jacek Czech 2:12.53 5 1 Aristeidis Makrodimitris 2:14.54 6 2 Kamil Otowski 2:15.09 7 3 Roman Bondarenko 2:16.71 8 8 Rodrigo Santillan 2:21.95
References