Runners of all ages prepare for the annual Mount Marathon Race in Seward, Alaska. Children as young as 2-years-old compete in a race that lasts a few blocks. Ages 7-17 run half the muddy and treacherous course up the 3022-foot mountain, ending in "the chute." A father runs his son down the street after missing the start of the 3-year-olds heat. The younger of two brothers digs in as they sprint down the final stretch of the race course.