The 4th season of the Hanoi International Heritage Marathon, proudly sponsored by Techcombank, has concluded with resounding success. Over 13,000 athletes from 55 countries and territories participated across four distances: Full Marathon (42.195km), Half Marathon (21.097km), 10km, and 5km. Notably, registrations for the 21km distance surged to over 30% this year, a significant increase from the previous season, highlighting the rapid growth of sports in Vietnam.