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Todd Boonstra (born May 29, 1961) is a former American cross-country skier. He competed in the Olympics in 1984, 1988, 1994. Boonstra is a 1984 graduate of the University of Vermont, where he competed for the Vermont Catamounts team. He is also a marathon runner, and in 2003 became the oldest champion of the Mount Marathon Race at 41. Boonstra graduated from Burnsville High School in Burnsville, Minnesota in 1980. He currently resides in Alaska, living in Ninilchik in the summers and Galena in the winter, where he is a teacher and ski coach.