Engen married Evelyn Peck, daughter of Mr. and Mrs. K.M. Peck of Centerville, in 1942. They had a son, Alan, who, like his father, gained game as a skier. Alf Engen's entire life has been devoted to skiing. He has received numerous trophies and a plethora of awards including "outstanding skier of the first 50 years of the twentieth Century" by the U.S. Ski Association.
Alf Engen was not only known for his personal skiing accomplishments, but for his contributions to the industry at large. Among other contributions, he assisted with the operation and ski lessons at Alta and Snow Basin Ski Schools during the 1945-46 ski season. Engen spent the 1946-47 season training Olympic Ski Contenders and the following season he coached the 1948 U.S. Olympic Ski Team. In 1948, he returned to Utah where he directed the Alta Ski School, the Little Mountain Ski School, and the Deseret News Free Ski School.
Engen once said, "Skiing is a great sport, and Utah has one of the finest natural playgrounds in the world. I hope some day to see it further developed." Utah's playground has most definitely been "further developed" with much indebted to Alf Engen. On 2 May 1981, at the age of seventy-one, Engen was honored by the Utah Ski Association for his many efforts in the sport of skiing and to the present day (1994) he enjoys the sport he helped popularize in Utah.