I’ve done IMTX 3x - I’m not a huge fan of the usually not wetsuit legal swim in a huge lake. I prefer current and buoyancy. The bike course isn’t difficult but can get boring. The run is packed with fans and spectators and the loops can be fun if you have some waiting on you. My feet get torn up on the Boardwalk but I do like all the excitement... I also like running through the Woodlands and the greenery.