GREENFIELD — More than 30 third- through fifth-graders at Greenfield Central Intermediate School and Harris Elementary School participated in Girls on the Run recently, a 10-week 5K training program that teaches lessons about friendship, confidence and making healthy choices.

The Girls on the Run afterschool program lessons encourage positive emotional, social, mental and physical development, according to its website.

“Participants explore and discuss their own beliefs around experiences and challenges girls face at this age,” according to the website.

“They also develop important strategies and skills to help them navigate life experiences. We start with helping the girls get a better understanding of who they are and what’s important to them. Then we look at the importance of team work and healthy relationships. And, finally, the girls explore how they can positively connect with and shape the world.”

Physical activity is woven into the three-month program, the website states.

At the end of the training program, the 36 girls participated in an area 5K fun run, said Allison Morgan, social worker at Harris Elementary.