Half Ironman in Monterrey, Mexico! Let's dive right in with the swim. Athletes will glide through the serene waters of the Santa Catarina River, covering a distance of 1.2 miles. With its calm currents, there's no need to fret about rough waves. Water temperatures typically range from 68-73°F (20-23°C), depending on the day's conditions. Next up, the 90KM bike course offers a speedy journey. Mostly flat, with a few gentle inclines at vehicle bridges, racers will complete two laps along the ...