Karin Stanton | Hawaii 24/7 Editor

It appears the Evolta Robot will complete its fourth challenge sometime Sunday morning. Crews estimate the robot should reach the Ironman triathlon finish line shortly before noon.

The Evolta Robots are taking on one of the world’s toughest Ironman courses this week, following more than 1,900 triathletes who competed earlier this month at the Ironman World Championship.

Built by Tomotaka Takahashi, the trio of robots are specifically designed to tackle each of the three triathlon disciplines. His robots have conquered three previous challenges.

In 2008, one climbed a rope from the floor of the Grand Canyon about 1,700 feet to the cliff top. That took 6 hours, 46 minutes.

In 2009, a robot survived the famed French Le Mans car racing circuit for 24 hours.

Just last year, a robot used the rechargeable batteries for two months, running from Tokyo to Kyoto.

Follow the robots’ progress and check out the live streaming video at: http://panasonic.jp/charge/evolta/challenge/2011_e/index.html

Follow the robot on Twitter: @EVOLTA_Robot