[3] Verhoeven is also one of the strongest female sport climbers, and in 2017, became the first-ever woman in history to establish a new 9a+ (5.15a) route, Sweet Neuf.

[4][5] In 2012, at age 16, she started participating in the Lead Climbing World Cup, and by 2014, had become the Junior European Champion at the Championships in Edinburgh.

[3] In late 2017, Verhoeven was forced to take time off from competition climbing with a serious elbow injury from which she did not fully recover until 2019.

[13][1] In June 2020, Verhoeven made the FFA of Kraftio, a route that was bolted 15 years earlier but had repelled all attempts to scale it;[14] Verhoeven graded it 8c+/9a making it Belgium's hardest-ever sport climbing route, which she named in memory of the former Belgian climber Chloé Graftiaux.

[15] In May 2024, Verhoeven became fourth-ever female to redpoint a 9b (5.15b) graded route with her ascent of La Planta de Shiva at Villanueva del Rosario in Spain.