Alexander Berggrens athletic background starts with swimming. At age 8 Alexander begins swimming with his home town swimming club in Herrljunga, Sweden and at age 15 Alexander transfers to Elfsborg Swim Club in Borås.
From 2015 to 2017 Alexander spends 2 years in Florida, Fort Pierce, and studying and competing for Indian River State College. In 2014, reaching what Alexander believes was his limits in pool swimming, Alexander begins competing in open water swimming.
Alexanders biggest merits in swimming include two 3rd place finishes at the Swedish Open Water national championships, a second place at the Scandinavian countries open water championships 10k race and two back to back NJCAA national championship titles together with Indian River State College between 2015 and 2017.