More triathlon content on www.daveerickson360.com In 2007, Scott Rigsby became the first double-amputee on prosthetics to finish an Ironman triathlon. He did it in Kona during the Ford Ironman World Championship. He finished the 140.6 mile course under the 17 hour cut-off time in a time of 16 hours, 42 minutes and 46 seconds.