Len Miller began his coaching career at Porterville High School and he also coached at Victor Valley, Laguna Beach, and Dos Pueblos High Schools, and Santa Barbara City College.

Len Miller coached at UC Irvine from 1973-1979. His 1975 and 1976 cross country teams won the NCAA Division II Cross Country Championships, and his 1976 track team won the NCAA Division II Track & Field Championship. While at Irvine, Len recruited and developed the greatest miler in United States history, Steve Scott, who held the American record in the mile for 26 years.

From Irvine, Len went to Arizona State University; his 1981 team won the Pac-10 Championship and he was named Pac-10 Coach of the Year.

Len is survived by his three children and their mother, Moira. He was also a beloved grandfather and great-grandfather. His spirit lives on in the countless lives he touched and the love he shared with his family, friends, and athletes.

A Celebration of Life was held on May 15, 2023.