Her victories at major international races include the Tarawera Ultramarathon, Western States, and Ultra Trail Cape Town.

Born on 15 January 1989 in Greymouth, on the West Coast of New Zealand's South Island, Croft grew up in the small town of Stillwater.

[4][1] After finishing high school, Croft briefly enrolled at Lincoln University near Christchurch, but returned home to the West Coast to work instead.

She also won the 100-km CCC event at UTMB in 2015, and followed that with a fourth-place finish at the highly competitive North Face 50 in San Francisco, California.

[7] At the 2019 Trail World Championships in Miranda do Corvo, Portugal, Croft won the silver medal behind Blandine L'Hirondel of France.

[14] In 2023, she ran the historic Nakasendo Trail in Japan along with Tim Tollefson and Olympians Magda Boulet and Desiree Linden.