Ellie, an athlete and Army service member, has a compelling journey marked by resilience and dedication. She grew up in Prescott Valley, AZ, USA, and faced challenges as a teenager. Joining a military-based educational programme sponsored by the US Army provided her with structure and support. This inspired her to enlist in the military at age 17.

| Season | Event | Rank |
|---|---|---|
| 2020 | 100m Backstroke - S6 | G Gold |
| 2016 | 100m Breaststroke - SB7 | G Gold |
| 2020 | 50m Freestyle - S6 | S Silver |
| 2020 | 50m Butterfly - S6 | B Bronze |
| 2016 | 4x100m Medley Relay - 34 Points | B Bronze |
| 2020 | 200m Individual Medley - SM6 | 4 |
| 2016 | 100m Backstroke - S8 | 8 |
Ellie began swimming in 2011 at the Brooke Army Medical Center in Fort Sam Houston, TX, USA. She believed swimming would help her overcome her injuries. "My objective has stayed the same throughout. It has never been about medals or my time. It's about sharing the beauty of adaptive sports," she stated.
In September 2014, Ellie fell ill while travelling to the Invictus Games in London, England. She was hospitalised and put on life support for 10 days. She returned to training in December 2014. Her recovery journey is a testament to her resilience and determination.
Ellie won a bronze medal in handcycling at the 2013 Warrior Games in Colorado Springs, CO, USA. In 2016, she received the Pat Tillman Award for Service at the ESPY Awards in the USA. In 2017, she was inducted into the Army Women's Hall of Fame by the US Army.
At the 2019 World Championships in London, Ellie was cheered on by the critical care team of Royal Papworth Hospital. They had cared for her during her critical illness in 2014. She donated her four gold medals from the 2016 Invictus Games to them as a mark of gratitude.
Ellie trains in the pool six days a week. Her ambition is to compete at the 2024 Paralympic Games in Paris. Her dedication to training reflects her commitment to achieving this goal.
"When I step onto the blocks, I never think, 'I want to win'. I think, 'I want to pour all of myself into this race because there are people who can't physically, mentally or emotionally do that'," Ellie shared. This philosophy drives her performance and dedication.
The tattoos on Ellie's right leg tell her life story. They include a large wounded crow representing her and a red cross symbolising her work as a combat medic. She also has a polar bear tattoo on her big toe that makes her giggle before races, dedicated to her husband Mason.
Ellie's father, James Marks, is her hero. She carries his military identification tags in her pocket during competitions as a tribute to him. Her family provides strong support throughout her journey.
Ellie's story is one of perseverance and dedication. From overcoming injuries to achieving success in adaptive sports, she continues to inspire many with her journey.
Ellie, an athlete and Army service member, has a compelling journey marked by resilience and dedication. She grew up in Prescott Valley, AZ, USA, and faced challenges as a teenager. Joining a military-based educational programme sponsored by the US Army provided her with structure and support. This inspired her to enlist in the military at age 17.