The sport of trail running is growing. With more specialization, sponsorships, and media attention, the scale of competition changes. The Golden Trail World Series, which launched in 2018, is helping guide this growth. With a world series circuit, national series, and a championship, the Golden Trail World Series (GTWS) “exists to celebrate and evolve trail running as a sport.” Given that trail races can be roughly anywhere from 5 k to 330 k and with...