Show off your passions with this fun black t-shirt! This short-sleeved tee features a white graphic design, a bold text that reads “THAT’S WHAT I DO, I RUN MARATHONS, AND I KNOW THINGS” and a silhouette of marathon runners. Made from comfortable fabric, it's perfect for casual wear or running errands. Express your love for marathon and a good laugh with this awesome t-shirt. Suitable for running, gym workouts, or everyday wear. A great gift for marathon enthusiasts!