Esther Guerrero, a prominent athlete and coach, resides in Banyoles, Spain. Fluent in Catalan and Spanish, she began her athletic journey at the age of nine. Guerrero's interest in athletics was sparked by a primary school activity, where her coach encouraged her to pursue the sport.

| Season | Event | Rank |
|---|---|---|
| 2021 | Women's 1500m | 28 |
| 2016 | Women's 800m | 39 |
Guerrero is a member of the New Balance Team in Spain. Her coaching team includes Joan Lleonart Montana for personal coaching since 2012 and Victor Lopez for strength and technique training.
Guerrero made her international debut in 2015, representing Spain at the World Championships held in Beijing, China. This marked the beginning of her international career.
One of Guerrero's most memorable achievements is participating in the 2016 Olympic Games in Rio de Janeiro. This experience stands out as a significant milestone in her career.
Guerrero believes that enjoying what she does is key to her performance. She has never felt pressured and maintains a positive outlook on her athletic career. Her hobbies include cooking and reading.
Her younger sister, Marina, has also competed in athletics at the national level. This family connection has likely played a role in Guerrero's dedication to the sport.
Guerrero has served as the sports director of the athletics section at CN Banyoles. However, she paused this role to focus entirely on preparing for the 2020 Olympic Games in Tokyo. The lockdown in March 2020 allowed her to dedicate herself fully to being an athlete, which she credits for her recent improvements.
As Guerrero continues to train and compete, her journey remains an inspiration for aspiring athletes worldwide.
Esther Guerrero, a prominent athlete and coach, resides in Banyoles, Spain. Fluent in Catalan and Spanish, she began her athletic journey at the age of nine. Guerrero's interest in athletics was sparked by a primary school activity, where her coach encouraged her to pursue the sport.