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.