The Challenge of a Lifetime is Hawaii's Ironman Triathalon. Unless you're an ironman, the outcome of this competition may not be of paramount importance to you. But it is crucial to Penny Marshall, a divorced mother seeking to prove that she's more than just an adjunct to her family. Marshall enters the 140-mile triathalon, which requires her to run, swim, and navigate a bicycle. Most of those who caught this TV movie's premiere on February 14, 1985, had tumbled to its outcome before the second commercial. ~ Hal Erickson, Rovi