Justin Smith of Iowa City makes his way across a hanging obstacle Saturday, Feb. 27, 2016 during the Iowa Ninja Warrior challenge at TGR Fitness in Des Moines. Michael Zamora/The Register
Alberto Lacayo III of Cedar Rapids gets ready to take on the obstacle course Saturday, Feb. 27, 2016 as he competes in the Iowa Ninja Warrior challenge at TGR Fitness in Des Moines. Michael Zamora/The Register
Dilon Flanders of Grimes pulls himself up the rope as a crowd of spectators watch Saturday, Feb. 27, 2016 during the Iowa Ninja Warrior challenge at TGR Fitness in Des Moines. Michael Zamora/The Register
Justin Smith of Iowa City scales across a climbing wall Saturday, Feb. 27, 2016 as he competes in the Iowa Ninja Warrior challenge at TGR Fitness in Des Moines. Michael Zamora/The Register
Derek Copeland of Cedar Rapids reaches out for the next ring Saturday, Feb. 27, 2016 during the Iowa Ninja Warrior challenge at TGR Fitness in Des Moines. Michael Zamora/The Register
Dilon Flanders of Grimes flexes from the top of a vertical ramp he climbed to finish the course Saturday, Feb. 27, 2016 during the Iowa Ninja Warrior challenge at TGR Fitness in Des Moines. Michael Zamora/The Register
Lexi Moreno manages to keep her balance as she makes her way across a slack line Saturday, Feb. 27, 2016 during the Iowa Ninja Warrior challenge at TGR Fitness in Des Moines. Michael Zamora/The Register
Andrew Klotzbach of West Des Moines swings across an obstacle Saturday, Feb. 27, 2016 as he competes in the Iowa Ninja Warrior challenge at TGR Fitness in Des Moines. Michael Zamora/The Register
Dilon Flanders of Grimes grips the edges of a hanging board as he leaps between the two obstacles Saturday, Feb. 27, 2016 during the Iowa Ninja Warrior challenge at TGR Fitness in Des Moines. Michael Zamora/The Register
Andrew Klotzbach of West Des Moines swings himself from one hanging board to the next Saturday, Feb. 27, 2016 as he competes in the Iowa Ninja Warrior challenge at TGR Fitness in Des Moines. Michael Zamora/The Register
Cara Headlee, 8, runs up the vertical ramp as Tristabel Akila of Ankeny (right) guides her along Saturday, Feb. 27, 2016 during a modified kids course at the Iowa Ninja Warrior challenge at TGR Fitness in Des Moines. Michael Zamora/The Register
Tristabel Akila of Ankeny tries to keep her balance on a slack line Saturday, Feb. 27, 2016 during the Iowa Ninja Warrior challenge at TGR Fitness in Des Moines. Michael Zamora/The Register
Tristabel Akila of Ankeny eyes the next grip on a climbing wall Saturday, Feb. 27, 2016 as she competes in the Iowa Ninja Warrior challenge at TGR Fitness in Des Moines. Michael Zamora/The Register
Dallas Lehman of West Des Moines swings across an obstacle Saturday, Feb. 27, 2016 as he competes in the Iowa Ninja Warrior challenge at TGR Fitness in Des Moines. Michael Zamora/The Register
Lexi Moreno climbs up a rope as a group of spectators look on Saturday, Feb. 27, 2016 during the Iowa Ninja Warrior challenge at TGR Fitness in Des Moines. Michael Zamora/The Register
Lexi Moreno leaps between a set of four jumping blocks Saturday, Feb. 27, 2016 during the Iowa Ninja Warrior challenge at TGR Fitness in Des Moines. Michael Zamora/The Register
Michael Shippy of Marshalltown makes his way across an obstacle Saturday, Feb. 27, 2016 during the Iowa Ninja Warrior challenge at TGR Fitness in Des Moines. Michael Zamora/The Register
Justin Smith of Iowa City swings off the last bar as he moves onto the next obstacle Saturday, Feb. 27, 2016 during the Iowa Ninja Warrior challenge at TGR Fitness in Des Moines. Michael Zamora/The Register
The Iowa Ninja Warrior competition, hosted by TGR Fitness in Des Moines, is the only event of its kind in the state. Round 4 of the competition was held Saturday as men and women sped through the obstacle course, which included quint steps, salmon ladder and Iowa’s first 14-foot warped wall. First- and second-place finishers advanced to the Nov. 12 finals.
Take a look around the gym during the competition with this 360-degree video by Michael Zamora.
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