| Athletes |
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Biographical data for: Ief STRAATHOF
| Classifications in season 2026/2027: |
| 12/09/26 | Heerenveen NED | National League NED - Opening competition | Divisie E | | 1000 meter: 2nd | | 24/09/26 | Heerenveen NED | Time Trials NED for World Tour | Women | | 333 m TT: 16th, 1000 m TT: 13th | | 26/09/26 | Heerenveen NED | Qualifying competition NED for World Tour | Vrouwen | | 1500 meter: 7th | | 26/09/26 | Heerenveen NED | Qualifying competition NED for World Tour | Vrouwen B | | 500 meter: 6th, 1000 meter: 4th | | 16/10/26 | Heerenveen NED | Time Trials NED for Junior World Cup | Women JUNAB | | 333 m TT: 8th, 666 m TT: 7th, 1000 m TT: 4th | | 17/10/26 | Heerenveen NED | National League NED - KNSB Cup Top-1 | Vrouwen WCJ | | Overall Ranking: 5th, 500 meter: 8th, 1000 meter: 4th, 1500 meter: 4th | | 22/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | U-19 Women | | Overall Ranking: 7th, 500 meter: 22nd, 1000 meter: 5th, 1500 meter: 4th | | 08/11/26 | Utrecht NED | National League NED - KNSB Cup breed-1 | Divisie B | | Overall Ranking: 13th, 1000 meter: 13th |
| Results in season 2026/2027: |
| 333 meter |
| 32 | .777 | 16/10/26 | Heerenveen NED | Time Trials NED for Junior World Cup | (Time Trial) | |
| 32 | .782 | 24/09/26 | Heerenveen NED | Time Trials NED for World Tour | (Time Trial) | |
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| 500 meter |
| 46 | .490 | 17/10/26 | Heerenveen NED | National League NED - KNSB Cup Top-1 | Halve Finales, Groep 1 | |
| 46 | .830 | 26/09/26 | Heerenveen NED | Qualifying competition NED for World Tour | Kwartfinale, Groep 1 | |
| 46 | .916 | 26/09/26 | Heerenveen NED | Qualifying competition NED for World Tour | Halvefinale, Groep 1 | |
| 47 | .225 | 26/09/26 | Heerenveen NED | Qualifying competition NED for World Tour | Finale, Groep 2 | |
| 47 | .403 | 17/10/26 | Heerenveen NED | National League NED - KNSB Cup Top-1 | Finale, Groep 2 | |
| 47 | .548 | 23/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Preliminaries, A | |
| 47 | .792 | 25/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Repechage SF, A | |
| 48 | .070 | 25/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Repechage QF, A | |
| 48 | .151 | 23/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Heats, A | |
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| 666 meter |
| 1:04 | .134 | 16/10/26 | Heerenveen NED | Time Trials NED for Junior World Cup | (Time Trial) | |
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| 1000 meter |
| 1:36 | .610 | 17/10/26 | Heerenveen NED | National League NED - KNSB Cup Top-1 | Halve Finales, Groep 1 | |
| 1:36 | .662 | 12/09/26 | Heerenveen NED | National League NED - Opening competition | Final, Group 1 | |
| 1:37 | .086 | 12/09/26 | Heerenveen NED | National League NED - Opening competition | Quarter Finals, Group 1 | |
| 1:37 | .156 | 24/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Semi-Final, A | |
| 1:37 | .871 | 16/10/26 | Heerenveen NED | Time Trials NED for Junior World Cup | (Time Trial) | |
| 1:37 | .941 | 25/09/26 | Heerenveen NED | Time Trials NED for World Tour | (Time Trial) | |
| 1:38 | .499 | 27/09/26 | Heerenveen NED | Qualifying competition NED for World Tour | Halvefinale, Groep 1 | |
| 1:38 | .543 | 22/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Preliminaries, A | |
| 1:39 | .859 | 24/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Repechage SF, A | |
| 1:40 | .147 | 22/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Heats, A | |
| 1:40 | .195 | 24/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Quarter-Final, A | |
| 1:40 | .722 | 08/11/26 | Utrecht NED | National League NED - KNSB Cup breed-1 | Finale, Groep 3 | |
| 1:40 | .967 | 12/09/26 | Heerenveen NED | National League NED - Opening competition | Semi Final, Group 1 | |
| 1:41 | .746 | 08/11/26 | Utrecht NED | National League NED - KNSB Cup breed-1 | Kwart Finales, Groep 1 | |
| 1:42 | .688 | 08/11/26 | Utrecht NED | National League NED - KNSB Cup breed-1 | Halve Finales, Groep 2 | |
| 1:45 | .389 | 24/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Repechage QF, A | |
| 1:46 | .061 | 27/09/26 | Heerenveen NED | Qualifying competition NED for World Tour | Finale, Groep 1 | |
| 1:51 | .384 | 24/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Final, A | |
| 2:14 | .104 | 17/10/26 | Heerenveen NED | National League NED - KNSB Cup Top-1 | Finale, Groep 1 | |
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| 1500 meter |
| 2:30 | .107 | 26/09/26 | Heerenveen NED | Qualifying competition NED for World Tour | Halvefinale, Groep 1 | |
| 2:33 | .514 | 26/09/26 | Heerenveen NED | Qualifying competition NED for World Tour | Finale, Groep 1 | |
| 2:35 | .031 | 24/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Semi-Final, A | |
| 2:38 | .276 | 23/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Heats, A | |
| 2:39 | .824 | 17/10/26 | Heerenveen NED | National League NED - KNSB Cup Top-1 | Finale, Groep 1 | |
| 2:48 | .094 | 24/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Final, A | |
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| 2000 meter relay |
| 2:52 | .025 | 23/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Semi-Final, A | |
| (Ktt-n relay: Fleur Alkemade, Naud Scheepstra, Ief Straathof, Leon Van Steinvoorn) |
| 2:54 | .739 | 24/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Final, A | |
| (Ktt-n relay: Fleur Alkemade, Naud Scheepstra, Ief Straathof, Leon Van Steinvoorn) |
| 2:58 | .419 | 22/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Heats, A | |
| (Ktt-n relay: Fleur Alkemade, Naud Scheepstra, Ief Straathof, Leon Van Steinvoorn) |
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| 3000 meter relay |
| 4:31 | .669 | 24/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Heats, A | |
| (NED-mix relay: Fleur Alkemade, Neeltsje de Boer, Lise Dijkstra, Ief Straathof) |
| 4:31 | .982 | 27/09/26 | Heerenveen NED | Qualifying competition NED for World Tour | Finale, Groep 1 | |
| (TEAM 4: Mijntje de Jong, Ief Straathof, Kiek Straathof, Femke Venema) |
| 4:32 | .097 | 25/10/26 | Budapest HUN | European Series Challenger ABS - Olympic Hopes | Final, A | |
| (NED-mix relay: Fleur Alkemade, Neeltsje de Boer, Lise Dijkstra, Ief Straathof) |
| 4:34 | .960 | 08/11/26 | Utrecht NED | National League NED - KNSB Cup breed-1 | Finale, Groep 1 | |
| (Team 12: Emilie Fransen, Ivar Lambregts, Ief Straathof, Lewis Wijbrandts) |
| 4:35 | .266 | 12/09/26 | Heerenveen NED | National League NED - Opening competition | Final, Group 1 | |
| (S3TeamF: Steven Grippeling, Rinze Onderwater, Ief Straathof, Lobke van Benthum) |
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