Oh this is fascinating. Get to your forties and everyone seems to be interested in marathons, triathlons, and putting on lycra to go and cycle somewhere.

This article explains that this is a function not only of access to the required time and money, but is a deep-seated need for those who are doing well out of the capitalist system.

Participating in endurance sports requires two main things: lots of time and money. Time because training, traveling, racing, recovery, and the inevitable hours one spends tinkering with gear accumulate—training just one hour per day, for example, adds up to more than two full weeks over the course of a year. And money because, well, our sports are not cheap: According to the New York Times, the total cost of running a marathon—arguably the least gear-intensive and costly of all endurance sports—can easily be north of $1,600.

[…]

There are a handful of obvious reasons the vast majority of endurance athletes are employed, educated, and financially secure. As stated, the ability to train and compete demands that one has time, money, access to facilities, and a safe space to practice, says William Bridel, a professor at the University of Calgary who studies the sociocultural aspects of sport. “The cost of equipment, race entry fees, and travel to events works to exclude lower socioeconomic status individuals,” he says, adding that those in a higher socioeconomic bracket tend to have nine-to-five jobs that provide some freedom to, for example, train before or after work or even at at lunch. “Almost all of the non-elite Ironman athletes who I’ve interviewed for my research had what would be considered white-collar jobs and commented on the flexibility this provided,” says Bridel.

[…]

Even so, there are myriad ways for relatively comfortable middle-to-upper-class individuals to spend their time and money. What is it about the voluntary suffering of endurance sports that attracts them?

This is a question sociologists are just beginning to unpack. One hypothesis is that endurance sports offer something that most modern-day knowledge economy jobs do not: the chance to pursue a clear and measurable goal with a direct line back to the work they have put in. In his book Shop Class as Soulcraft: An Inquiry into the Value of Work, philosopher Matthew Crawford writes that “despite the proliferation of contrived metrics,” most knowledge economy jobs suffer from “a lack of objective standards.”

[…]

Another reason white-collar workers are flocking to endurance sports has to do with the sheer physicality involved. For a study published in the Journal of Consumer Research this past February, a group of international researchers set out to understand why people with desk jobs are attracted to grueling athletic events. They interviewed 26 Tough Mudder participants and read online forums dedicated to obstacle course racing. What emerged was a resounding theme: the pursuit of pain.

“By flooding the consciousness with gnawing unpleasantness, pain provides a temporary relief from the burdens of self-awareness,” write the researchers. “When leaving marks and wounds, pain helps consumers create the story of a fulfilled life. In a context of decreased physicality, [obstacle course races] play a major role in selling pain to the saturated selves of knowledge workers, who use pain as a way to simultaneously escape reflexivity and craft their life narrative.” The pursuit of pain has become so common among well-to-do endurance athletes that scientific articles have been written about what researchers are calling “white-collar rhabdomyolysis,” referring to a condition in which extreme exercise causes kidney damage.

Source: Why Do Rich People Love Endurance Sports? - Outside Online