Guam competed at the 2015 World Championships in Athletics in Beijing, China, from 22–30 August 2015. Guamanian national record holder Regine Tugade, a high school senior at the time, was the only athlete from Guam to compete, and her only event was the women's 100m. Knowing that she would be the only Guam athlete, as was the case when she competed in the 2015 World Youth Championships in Athletics weeks before, she said her goal was just to set a personal record. Not having suitable training partners to meet with, Tugade trained largely alone for the race, arriving to her track at 5:30 a.m. on weekdays to prepare before her classes started. After classes ended, Tugade trained with the for this race.