Complex sentence: First, she got into a first place at the World championships in both Stoke Mandeville and Sydney in 1994 and 1998, then in 1998 and 2000 she got it again at the 1996 Paralympic Games and the 2000 one as well.
Split into simpler sentences: First, she got a first place at the World championships at both Stoke Mandeville in 1994 and Sydney in 1998. Then in 1998 and 2000 she got first place again at the 1996 Paralympic Games and the 2000 as well.