The Mach I Track Club featuring athletes from all over Parker County will send four competitors to the Junior Olympics after results from the San Marcos Regional meet.Only the top five in each category advance. Advancing for the boys was Justin McAfee in the 9-10 age division. McAfee finished fourth in the 1,500 meters with a time of 6:19. Also advancing for the boys in the 15-16 age group was Jared Steele, who finished third in the 1,500m (4:24) and fifth in the 800m with a time of 2:02. For the girls, Sadie Tharp finished third in the 3,000m with a time of 11:25 and fifth in the 1,500m (5:23). In the 13-14 girls age group, Gracie Morris took top honors in the 3,000m with a time of 10:45.