I first heard about Girls on the Run from an old coworker (Thanks, Cass). Girls on the Run is an international nonprofit that works with girls ages 8-13 to build confidence, cope with bullying and develop healthy living skills. One of their big events is a 5K. Running over 3 miles is tough for a lot of people, and it feels even longer on little legs.
To help motivate the runners, the coaches seek the help of additional volunteers, called Sparkle Runners. Each sparkle runner is paired with a girl to help encourage her through the race, so she stays positive and happy over the 3 miles.