On Friday morning, while many Southeast Missouri residents will be waking up and getting ready for work, 70-year-old Mike Brooks will be running a marathon on Cape Girardeau’s Cape LaCroix Trail. It will be his sixth marathon in six days. On Saturday, he will get up and run another. A marathon is 26.2 miles long. Brooks aims to complete seven of them in seven days in an effort to raise $15,000 for Camp Sunshine, a free-of-charge retreat in Maine for children with life-threatening illnesses and their families. Brooks’ Sevens for Camp Sunshine Challenge is part of the Riverboat Series, hosted by Mainly Marathons, and is sponsored by The Finish Line Youth Foundation. The series takes place in seven states along the Mississippi River. The Cape Girardeau leg of the race begins at 6:30 a.m. Friday on the La Croix Trail near the Osage Centre. The marathon series will end Saturday in Vienna.