According to the IRONMAN press release athletes will start their race with a one-loop 1.9 km swim against the backdrop of the Fortaleza da Cidadela, the most spectacular bay in Portugal. Originating in Cascais, the 90.1 km, one-loop bike course runs alongside the ocean, and through to the Village of Oeiras. The course also covers stunning natural scenery in the Sintra forests, returning to Cascais along the Guincho Beach. The two-loop 21.1 km run course leads athletes along the seafront promenade and to Estoril and S. Pedro, where competitors will likely be cooled by the sea breeze.

The are below is called Hole of Inferno, but word has it that you can check it out before and after the race, but the race course itself will not take you to this place where sea water rushes in and sprays water high in the air.

"We are very happy to host an IRONMAN 70.3 triathlon in Portugal and Cascais is the ideal home for this event. We look forward to providing athletes with one important reason to come here, but many reasons to stay," said Jorge Paulo Pereira, Race Director of IRONMAN 70.3 Cascais Portugal.

You can register for this event starting October 9, 2016 via ironman.com/703cascais