That’s my race report from last year.
The swim is well sheltered in the harbour. V enjoyable place to swim
First 40km or so of the bike is very flat and fast. The climbing comes when you head north out of Estoril. The gp circuit is also very lumpy. The final big climb in the Sintra hills was very exposed and quite windy last year. There are a few rollers Just before this though. After the turn it’s an incredibly fast descent all the way back to Cascais.
The run is also not flat. I think there were a few hitters who ran ~1:15s on the day but I’d say anywhere around 1:30 and you’ve had yourself a day.
Enjoy, I’d love to be there this year. A great race and town for it 