Sigríður Lára senior career started in 2009 for ÍBV in the Icelandic second-tier 1. deild kvenna.
[3] On 14 August 2018, with ÍBV in 5th place in the Úrvalsdeild, she was allowed to leave the club and sign with LSK of the Norwegian Toppserien.
[9] Sigríður Lára debuted for the Icelandic senior team on February 14, 2016, in a 1–1 tie against Poland.
On June 22, 2017, Sigríður Lára was included by coach Freyr Alexandersson in the squad that represented Iceland at the UEFA Women's Euro 2017.
[13] In January 2018, it was reported that Sigríður had been diagnosed with arthritis, at the age of 23, and would have to take medication for the rest of her life to keep the symptoms down.