Martina Castro

In 2020, Adonde Media announced it would produce and distribute the fifth season of the Spanish-language podcast, Las Raras, with Castro as the executive producer. Castro was the executive producer of the Las Raras episode "Cruces en el desierto" (Crosses in the Desert), which won the 2020 Best Audio Documentary award from the International Documentary Association. In 2021, Adonde Media and Hrishikesh Hirway announced their partnership with support from PRX's Radiotopia to produce a spinoff of Song Exploder, titled Canción Exploder, for Spanish-speaking audiences.

Castro has also focused on data collection about podcast user interests and habits; in 2019, the community of Spanish language podcasters that she co-founded called Podcaster@s, conducted the first collaborative podcast listener survey, and in 2020, Adonde Media was a funder of the first U.S. Latino Podcast Listener Report by Edison Research.

Since its founding in 2017, Adonde Media clients have included Duolingo, TED, Spotify, Vice News, and Georgetown University. In 2017, the Duolingo Spanish Podcast launched, hosted and co-produced by Castro, to support English speakers learning Spanish, using true first-person stories from around the Spanish-speaking world. In 2020, Castro narrated a six-part series titled "El Gran Robo Argentino" ("The Great Argentine Heist") on the Duolingo Spanish Podcast, focused on the true story of a 2006 bank robbery in Argentina, with interviews of people related to the historical event.

In 2015, Castro received a Fulbright grant to teach the art of audio storytelling at the University of Montevideo in Uruguay. She then moved to Chile and applied to the incubator program StartUp Chile. In that program, she started Adonde Media, a global production company focused on podcasts in Spanish.

In 2011, Castro co-founded Radio Ambulante with Daniel Alarcón, Carolina Guerrero, and Annie Correal; the show is now distributed by NPR, and Castro also worked as a sound designer for the project. Castro has also worked independently on other projects for All Things Considered and Morning Edition.

Castro attended Thomas Jefferson High School for Science and Technology in Alexandria, Virginia, and then attended Amherst College. While in college, Castro wrote the first blog for NPR's Next Generation Radio program. Castro graduated from Amherst in 2004, majoring in women's and gender studies.

Castro was born in 1982 in Maryland to a mother and father from Montevideo, Uruguay. As a young child, she first spoke Spanish and then learned English, and then immersed herself in Spanish during a month-long visit to Uruguay when she was 13, after which she has said she began to think in Spanish. Throughout her childhood, she regularly visited her family in Uruguay.