Triatlón de Catalunya is an Olympic-distance triathlon in Banyoles, a town in Girona province in Catalonia, with Lake Banyoles at the center of the day. It is scheduled for late August and uses the standard 51.5 km format: a 1.5 km swim, 40 km on a road bike, and 10 km running on the road.
The race is built around the lake rather than a city street circuit, so the swim is the part that gives it its clearest identity. The available listing does not give a start time, elevation gain, entry price, or much history, but it does point to a nature-heavy setting with lake water, road cycling, and a final run around Banyoles.