Billy loved to run, but he didn't think he was very fast.
One day, Billy's friend Sarah signed them both up for a race.
Billy worried he would come in last place.
But Sarah told him, 'You can do it, Billy! Believe in yourself.'
Billy decided to train every day to get faster.
He practiced running up hills and sprinting down them.
He did push-ups and squats to make his legs stronger.
On the day of the race, Billy felt nervous but excited.
The race started, and Billy ran as fast as he could.
He passed one runner, then another, and another!