Before the sun came up on Labor Day morning, triathletes were putting the finishing touches on equipment before plunging into Lady Bird Lake for Austin’s TriRock race.
For many, summer plant growth made the swim the most challenging part of the triathlon.
"It was a great course. It was really fast on the bike, the swim was a little rough with all the Hydrilla,” participant Julie Stupp said.
Daniel Vertiz came in first finishing in just about two hours. He said the humidity was the hardest obstacle to overcome.
"The swim, man that was crazy, I was fighting the algae. I felt like I was fighting a sea monster the entire time," Vertiz said. "Soon as I got into the run I really tried to bring my heart rate down because of this humidity. I didn't want to start off too fast and start dying."
Waiting at the end of the journey was a group of volunteers to help the athletes cool down.
"Austin is a great host, all these volunteers were amazing, I really appreciate everybody's help," Stupp said.
Monday's race featured both a sprint and Olympic distances. Competitors also finished the race as part of relay teams.