The 29-year-old Pole reached the top of a 15-metre wall in 6.37 seconds in the South Korean capital, according to news outlets.
She improved on her previous world record of 6.53 seconds that she set in Salt Lake City last year, public broadcaster Polish Radio’s IAR news agency reported.
Mirosław finished fourth in the women's climbing competition at the Tokyo Games in 2021, narrowly missing out on an Olympic medal.
(gs)
Source: IAR, polskieradio24.pl