García is from the Province of León, where she started running from the age of three.[4][3] She initially competed for the athletics division of the FC Barcelona club.[1] By 2019, she had moved to Palencia to be coached by Uriel Reguero in Valladolid.[3]
That bronze medal result was improved upon at the 2018 European Cross Country Championships, this time in the U23 race, when García was the 3rd scorer and 12th overall on the Spanish team earning a silver medal. It was the first ever medal by Spain in the U23 category at the European Cross Country Championships.[7]
At the 2021 Spanish Indoor Athletics Championships, García won the 3000 m, her first senior national title. This earned her qualification to the 2021 European Athletics Indoor Championships, where García competed in the 3000 m and barely missed out on the finals. After what she thought was a good start tactically, García said she brushed with another runner with 400 m to go which hampered her final push. That race gave her confidence to try for the Olympic standards in the 1500 m and 5000 m, which she had previously said were out of reach.[10] García ultimately was not selected for the Spanish Olympic team.
During the 2023 indoor season, García competed at the European Indoor Championships 3000 m, qualifying for the final and finishing 10th.[2] Outdoors, García set her goal on achieving the Budapest World Athletics Championships standards in the 1500 m and 5000 m.[12] Though she was not ultimately able to achieve them, she came closest at the 2023 Golden Gala, where she was a part of Faith Kipyegon's world record-breaking 1500 m race and finished 14th in a personal best of 4:07.22.[2] At the 2023 European Cross Country Championships, García was a member of the Spanish silver medal-winning team, but she was only the 5th Spaniard to finish and did not score for the team.[2]
She obtained a bronze medal in the 5000 m at the 2024 European Athletics Championships with a new personal best of 14:44.04, besting the 29-year old national record of Julia Vaquero in the process.[13]