[2] At the secondary school’s mountain bike championships in October 2020 in Wellington, she won in both the enduro and downhill.

[10][5] In the 2022 season, she rode her inaugural junior women's (under-23[11]) world cup race aged 17 in March in Lourdes, France, and came sixth.

[14] A week later, she competed at Crankworx Innsbruck; she lost time through a fall and came in eleventh place riding in the elite women's category.

[11][17] The German mountain-bike online magazine MTB News commented after Vallnord that "Jenna Hastings has firmly established herself at the top of the junior field" (Jenna Hastings hat sich an der Spitze des Juniorinnen-Feldes fest etabliert).

[18] At the fifth world cup race on 30 July 2022 in Snowshoe, West Virginia, USA, Hastings came fourth.