This is the not so typical story of an opera singer that becomes a record-breaking masters runner.

Marilyn Arsenault came to running later in her life, following a career as a classically-trained singer. After trading in scales for strides, she has achieved a lot in a relatively short career on the road, on the track, and in cross-country racing. 

What she credits much of her running success to may surprise you: her singing.

On this week's episode of The Shakeout, we chat with Arsenault about her career as an opera singer, her late introduction to running,  and what advice she has for other runners who are starting out later in life.