Kortchaguina's current world ranking in Women's Marathon is 914th, with her overall world ranking at 9,692nd. As for her highest ever world ranking positions, she was ranked 837th in Women's Marathon, 656th in Women's Road Running, and 8,979th in Women's Overall Ranking.
Kortchaguina's first recorded IAAF Race result occurred on August 7, 1982, in Leningrad(RUS), where she competed in the 5,000m race and placed 1st with a time of 16:27 (16 minutes & 27 seconds). The next day on August 8, 1982, Kortchaguina achieved another 1st-place finish, this time in the 10,000m race. She finished with a time of 34:04.5 (34 minutes & 4.5 seconds).
On October 13, 1996, Kortchaguina finished 1st in the Lyon Marathon in France, with a time of 2:35:35 (2 hours, 35 minutes, & 35 seconds). Less than a month later, on November 10, 1996, she finished 4th in the Puteaux Marathon in France, with a time of 2:34:39 (2 hours, 34 minutes, & 39 seconds). The winner of the 1996 Puteaux Marathon, Lidia Panciu, finished with a time of 2:33:22, only 1 minute & 17 seconds faster than Kortchaguina.[2]
On October 15, 2000, Kortchaguina competed in the Istanbul Marathon, achieving a 7th-place finish with a time of 2:46:00 (2 hours & 46 minutes).
In the 2006 Commonwealth Games, held in Melbourne, Kortchaguina achieved a 6th-place finish in Women's Marathon with a time of 2:36:43 (2 hours, 36 minutes, & 43 seconds).
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