In February 2008, Leenstra was crowned the World Junior Speed Skating Champion in Changchun, China.

At the end of the season in March 2008 she improved the junior world records on the 1000[4] and 1500 meters[3] and the mini combination.

Leenstra is married to Italian Olympic gold medalist skater Matteo Anesi.

During Olympic seasons World Single Distance Championships are not held.

All results are sourced from the International Skating Union (ISU).