Korea’s streets, parks and even travel itineraries are being redrawn by the sound of pounding feet, as a nationwide running trend shows no sign of slowing. Once a preserve of a small group of enthusiasts, running has evolved into a mass hobby, with some 10 million people — roughly double the figure from 2015 — now estimated to identify themselves as runners and lace up regularly, according to industry and tourism data. Marathons and road races are multiplying across the country, and running-themed trips, dubbed "run trips," that combine travel and races are emerging as a new form of leisure. For 38-year-old office worker Yoo Jae-moon, the trend began last fall with a suggestion from a colleague. "I used to struggle even with walking fast," Yoo said. "Now I run 5 kilometers very slowly after work or on weekends, and just hitting 30 or 40 minutes feels like a big achievement." Running, he added, has helped him lose weight and feel stronger in his back and shoulders, and he is now considering his first half marathon this year. The appeal for many lies in simplicity and autonomy. After