Bo Olsen, a senior at Buchanan High, won the 800 meters in 1:57.35, prevailed in the 1,600 meters in 4:11.04 and helped the Bears finish second in the 4x400-meter relay in 3:23.19 CIF at the Central Section Masters meet, also known as the Valley Championships, at Veterans Memorial Stadium at Buchanan High in Clovis.