Ser-Od Bat-Ochir, known as Ziggy, has had a long and distinguished career in marathon running. Born in Mongolia, he began his journey in middle-distance events at age 14. By 1997, he transitioned to longer distances and competed in his first marathon in 2002. His passion for running ignited during a primary school sports day when he won his first race.

| Season | Event | Rank |
|---|---|---|
| 2016 | Men's Marathon | 91 |
| 2012 | Men's Marathon | 51 |
| 2008 | Men's Marathon | 52 |
| 2004 | Men's Marathon | 75 |
Bat-Ochir made history at the 2016 Olympic Games in Rio de Janeiro by becoming the first athletics competitor to represent Mongolia at four editions of the Olympics. He extended this record to five appearances at the 2020 Games in Tokyo. He also had the honour of being Mongolia's flag bearer at the opening ceremony of the 2012 Olympic Games in London.
Bat-Ochir's wife, Oyuntuya Odonsuren, has been a significant influence on his career. A former runner herself, she represented Mongolia at the 2001 World Championships in Edmonton. Since 2005, she has been coaching Bat-Ochir, providing both professional guidance and personal support.
Despite his achievements, Bat-Ochir has faced challenges, particularly with financial support. Marathon running is not popular in Mongolia, leading him to train in Japan and the United Kingdom. He often had to fund his training from his own pocket due to inconsistent support from organisations.
Bat-Ochir's sporting philosophy is simple: "I'll run for my own enjoyment, health and peace of mind." He plans to compete at the 2024 Olympic Games in Paris and aims to run his final marathon there. After retiring from competitive running, he intends to transition into coaching.
Bat-Ochir resides in Japan with his wife Oyuntuya Odonsuren and their children Jambaldorj, Nomin-Od, Naran-Od, and Uran-Od. Fluent in English and Mongolian, he continues to inspire many with his dedication to the sport.
Throughout his career, Bat-Ochir has shown resilience and passion for marathon running. His journey from a young middle-distance runner to an Olympian is a testament to his commitment and love for the sport.
Ser-Od Bat-Ochir, known as Ziggy, has had a long and distinguished career in marathon running. Born in Mongolia, he began his journey in middle-distance events at age 14. By 1997, he transitioned to longer distances and competed in his first marathon in 2002. His passion for running ignited during a primary school sports day when he won his first race.