He began working with Rigoberto Medina, a Cuban coach who had trained the 2003 Pan American champion Cristina López.

[4] Barrondo made his international debut at the 2011 Pan American Race Walking Cup, where he claimed the silver medal in the 20 km with a time of 1:25:56 hours.

[6] As a result of this performance, he was selected to represent Guatemala at the 2011 World Championships in Athletics, being one of only two entrants from his country, alongside fellow walker Jamy Franco.

[7] In the World Championships 20 km race, he came in tenth place with a time of 1:22:08 hours and was the second best performer from the Americas, behind Colombia's Luis Fernando López who came third.

[8] At the 2011 Pan American Games in October, he and Jamy Franco completed a Guatemalan double in the men's and women's 20 km walks.