A 13-year-old boy traveled to Washington, D.C. to raise money for homeless kids. Zach Bonner was pretty tired. Instead of going to camp last summer, Zach decided to walk 668 miles from Atlanta to Washington, D.C. He hoped more people would help homeless kids. His journey to help others began six years ago. Zach walked from his home in Tampa to Tallahassee. Then, in 2008, Zach Bonner went on a 270-mile walk from Tallahassee to Atlanta. In 2010, he did it again, from Tampa to Los Angeles. Last summer, Zach traveled 12 miles every day on foot. Along the way, he collected more than 1000 letters about homeless children. He hoped to give the letters to President Obama. Zach says he wants his walk to make a difference. More than 1 million children in the U.S. have nowhere to live. During his journey, Zach spent 24 hours with some homeless children so he could learn the difficulties they face. When Zach walked the last mile of his long journey, more than 500 supporters, including 300 homeless kids, joined Zach. They went with him down the National Mall. "It was a long walk," Zach says, "but it was meaningful." Although the journey is difficult and tiring, Zach won't give up. "When homeless kids get tired of being homeless, they don't get to stop. So why should I stop when I get tired of walking?" When Zach walked the last mile of his long journey,   _  .
he was tired and hurt he decided to stop many people walked with him many homeless kids thanked him