Hermans was born in Hasselt, Flanders, and he turned professional in 2009 with Topsport Vlaanderen–Mercator.

[2] In April 2015, he won the Belgian classic Brabantse Pijl with a late attack and resisted to the return of the peloton by a few seconds to cross the line solo.

[8] A couple of weeks later, he went on to win the third stage of the Tour de Yorkshire in solo fashion, attacking the leading group with twelve kilometers remaining.

In August 2020, he was named in the startlist for the 2020 Tour de France.

[10] Media related to Ben Hermans at Wikimedia Commons