Boulder based professional triathlete Justin Daerr returns to the show two years after his firstIronman win at Ironman Boulder in 2014.

Since that time he's had several top 5 Ironman finishes, including 2nd at Ironman Mount-Tremblant in 2015 and 4th at Ironman Canada in 2016.

At age 35 he's started 36 Ironmans and finished 32.