Trails will be closed on Howelsen Hill tomorrow, to accommodate the Nordic and Alpine Skiing, Colorado High School State Championships. Over 140 of the best Colorado high school skiers will be in the area to participate. The athletes will be using the Howelsen Nordic Trails for the races. Rodeo Loop, Haakan Spar and Bluff Loop trails will be closed from 7 tomorrow morning until 4:30 tomorrow afternoon. Hobo Park and Ballfields will remain open during that time. However, there will be no access to higher elevation trails from the front side of Howelsen Hill. The face of Howelsen Hill will also be closed for the Alpine Slalom races from 11 to 3.