Some international locations have been mentioned, so I'll mention one of my favorites - Loutraki, Greece.

Loutraki has mountains, flat lands, swimming beaches, and an aquatics center. It has Malibu geography and climate but with Bakersfield real estate prices. The Athens Airport is about an hour away by car. Athens commuter trains operate to a station on the outskirts of Corinth about 10 kilometers away.

The ETU Triathlon youth European championship was held in Loutraki in 2018.