She competed for Switzerland at the 2018 Winter Olympics in the ladies' mass start.

[4] Härdi's first major speed skating events were the 3000m at the Junior World Cup in Baselga di Pinè, Italy, and the 2016 World Junior Championships in Changchun, China.

[6] The two events helped her overall rank twenty-third in the 2015-16 World Cup season with 45 points, thus qualifying her for the 2018 Winter Olympics.

[7] Härdi competed at the 2018 European Speed Skating Championships in Kolomna, Russia and finished thirteenth.

[10] Härdi is the first Swiss skater to compete in the ladies' mass start event since its introduction at the 2018 Winter Olympics.