Heat 3 | | time | | SO | 16.Isaac Nader | Portugal | 3:45.50 | Q | - | 17.Kieran Lumb | Canada | 3:45.66 | Q | - | 18.Mario García | Spain | 3:46.48 | Q | - | 19.Tshepo Tshite | South Africa | 3:46.70 | | - | 23.Rob Napolitano | Puerto Rico | 3:48.92 | | - | 26.Biniam Mehary | Ethiopia | 3:55.81 | qR | - | 28.Eduardo Herrera | Mexico | 4:02.94 | SB | - |
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Heat 4 | | time | | SO | 1. Vincent Kibet Keter | Kenya | 3:38.96 | Q | - | 2. Hobbs Kessler | United States | 3:39.07 | Q | - | 3. Geordie Beamish | New Zealand | 3:39.17 | Q, SB | - | 8. Elzan Bibić | Serbia | 3:39.98 | SB | - | 9. Charles Philibert-Thiboutot | Canada | 3:40.18 | | - | 24.Thomas Vanoppen | Belgium | 3:50.70 | | - | -. Callum Elson | Great Britain | DNF | | - |
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