Location: 1 hour from Tokyo so it very convenient, and can register on the day so all very simple.
Swim: In a very hot reservoir with lots of tasty green algae. Definitely need to keep your mouth shut for this one. Make the Japan mandatory wetuit rule a bit crazy.
Bike: Around and across the reservoir, several laps.
Run: It's mid August so when I did it the temp was 45c in the shade, which is ridiculously hot. Good training for hot weather and how to manage the heat.
Afterparty: Car air condition has never felt so good.