American Ninja Warrior season 4

The fourth season of American Ninja Warrior began on May 20, 2012, and aired on NBC and G4. This was a landmark season for Ninja Warrior, as the entire format was overhauled. For the first time, the finals took place on U.S. soil. In addition, regional qualifying and finals were added, taking place in the series' flagship location, Venice Beach, CA, Dallas, TX, and Miami, FL. New co-host Jonny Moseley replaced Jimmy Smith, while Angela Sun replaced Alison Haislip. Again, the winner would have received $500,000 and the coveted American Ninja Warrior title. Brent Steffensen became the first competitor to complete the Ultimate Cliffhanger.

Changes
Mount Midoriyama was moved from Japan to Las Vegas, Nevada for the national finals.

Regions
Instead of just one region, there were six regions: the Southwest, the Midwest, the Northeast, the Northwest, the Midsouth, and the Southeast.

Regional Qualifying
Submission videos for American Ninja Warrior Season 4 had been collected since January 25, 2012. There were six regional competitions held in three locations: Venice Beach, CA (Southwest and Northwest), Dallas, TX (Midwest and Midsouth), and Miami, FL (Northeast and Southeast) that determined the 100 competitors to participate in the qualifying rounds. The top 30 competitors that went the farthest the fastest would move on to the finals rounds.

Regional Finals
The 30 competitors from qualifying in each region tackled an extended course, featuring three new additional obstacles like the Salmon Ladder and Cargo Climb. The top 15 competitors that went the farthest the fastest would move on to the national finals in Las Vegas.

Notable competitors

 * Professional Parkour Athlete and Freerunner Brian Orosco
 * British film actor William Moseley
 * Tennessee Titans defensive end Kamerion Wimbley
 * Stuntman Dan Mast
 * Stuntwoman Luci Romberg
 * "Roam" (a.k.a. A.J. Amores) and "Chairman Platinum" from MMO video game company Artix Entertainment
 * Harlem Globetrotters basketball player Bull Bullard
 * Devin Thorpe aka Grim Leaper from Fly or Die Freerunning
 * Survivor China Contestant Michael "Frosti" Zernow

Legend
The competitor cleared that stage. The competitor is female. The competitor ran out of time on the obstacle.

For the first time in the history of the series, rather than traveling to Japan to compete on Sasuke, 100 finalists from the regional qualifying and finals competed in the National Finals at Mount Midoriyama that was built just off the Las Vegas Strip.