| Athletes |
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Biographical data for: CHOI Ji Hyun
| Classifications in season 2018/2019: |
| 02/11/18 | Calgary CAN | ISU Worldcup 1 | Ladies | | 500 m (2): 23rd, 1500 m: 10th | | 09/11/18 | Salt Lake City USA | ISU Worldcup 2 | Ladies | | 1000 m (1): 14th, 1000 m (2): 12th | | 07/12/18 | Almaty KAZ | ISU Worldcup 3 | Ladies | | 500 m: 7th, 1500 m (1): 21st | | 01/02/19 | Dresden GER | ISU Worldcup 5 | Ladies | | 500 m: 14th, 1000 m (1): 2nd | | 08/02/19 | Torino ITA | ISU Worldcup 6 | Ladies | | 500 m (1): 16th, 500 m (2): 43rd |
| Results in season 2018/2019: |
| 500 meter |
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| 1000 meter |
| 1:29 | .334 | 10/11/18 | Salt Lake City USA | ISU Worldcup 2 | Quarterfinals | |
| 1:30 | .072 | 02/02/19 | Dresden GER | ISU Worldcup 5 | Semifinals | |
| 1:31 | .504 | 01/02/19 | Dresden GER | ISU Worldcup 5 | Heats | |
| 1:32 | .424 | 02/02/19 | Dresden GER | ISU Worldcup 5 | Finals, Final A | |
| 1:32 | .884 | 11/11/18 | Salt Lake City USA | ISU Worldcup 2 | Quarterfinals | |
| 1:33 | .379 | 02/02/19 | Dresden GER | ISU Worldcup 5 | Quarterfinals | |
| 1:33 | .456 | 09/11/18 | Salt Lake City USA | ISU Worldcup 2 | Heats | |
| 1:36 | .106 | 01/02/19 | Dresden GER | ISU Worldcup 5 | Preliminaries | |
| 2:08 | .068 | 09/11/18 | Salt Lake City USA | ISU Worldcup 2 | Heats | |
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| 1500 meter |
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| 2000 meter relay |
| 2:53 | .562 | 09/11/18 | Salt Lake City USA | ISU Worldcup 2 | Quarterfinals | |
| (REPUBLIC OF KOREA: Choi Ji Hyun, Hong Kyunghwan, Kim Yejin, Lee June Seo) |
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| 3000 meter relay |
| 4:06 | .852 | 11/11/18 | Salt Lake City USA | ISU Worldcup 2 | Finals, Final A | |
| (REPUBLIC OF KOREA: Choi Ji Hyun, Choi Minjeong, Kim Jiyoo, Noh Ah-Reum) |
| 4:07 | .434 | 09/11/18 | Salt Lake City USA | ISU Worldcup 2 | Quarterfinals | |
| (REPUBLIC OF KOREA: Choi Ji Hyun, Choi Minjeong, Kim Jiyoo, Noh Ah-Reum) |
| 4:08 | .100 | 09/02/19 | Torino ITA | ISU Worldcup 6 | Semifinals | |
| (REPUBLIC OF KOREA: Choi Ji Hyun, Kim Jiyoo, Kim Geonhee, Kim Yejin) |
| 4:08 | .575 | 02/11/18 | Calgary CAN | ISU Worldcup 1 | Quarterfinals | |
| (REPUBLIC OF KOREA: Choi Ji Hyun, Kim Jiyoo, Kim Yejin, Shim Suk Hee) |
| 4:09 | .220 | 02/02/19 | Dresden GER | ISU Worldcup 5 | Semifinals | |
| (REPUBLIC OF KOREA: Choi Ji Hyun, Kim Yejin, Kim Jiyoo, Shim Suk Hee) |
| 4:10 | .955 | 08/02/19 | Torino ITA | ISU Worldcup 6 | Quarterfinals | |
| (REPUBLIC OF KOREA: Choi Ji Hyun, Kim Yejin, Kim Jiyoo, Shim Suk Hee) |
| 4:11 | .242 | 01/02/19 | Dresden GER | ISU Worldcup 5 | Quarterfinals | |
| (REPUBLIC OF KOREA: Choi Ji Hyun, Choi Minjeong, Kim Yejin, Kim Jiyoo) |
| 4:12 | .081 | 07/12/18 | Almaty KAZ | ISU Worldcup 3 | Quarterfinals | |
| (REPUBLIC OF KOREA: Choi Ji Hyun, Kim Jiyoo, Kim Geonhee, Shim Suk Hee) |
| 4:16 | .227 | 09/03/19 | Sofia BUL | World Championships | Semifinals | |
| (KOREA: Choi Minjeong, Choi Ji Hyun, Kim Jiyoo, Shim Suk Hee) |
| P | 03/02/19 | Dresden GER | ISU Worldcup 5 | Finals, Final A | |
| (REPUBLIC OF KOREA: Choi Ji Hyun, Kim Jiyoo, Kim Geonhee, Kim Yejin) |
| P | 10/02/19 | Torino ITA | ISU Worldcup 6 | Finals, Final A | |
| (REPUBLIC OF KOREA: Choi Ji Hyun, Kim Jiyoo, Kim Geonhee, Kim Yejin) |
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