The Ironman Boulder 70.3 course offers athletes a unique challenge amidst the natural beauty of Boulder, Colorado. The event begins with a one-lap swim in the Boulder Reservoir, known for its serene and clear waters. This swim provides a refreshing start to the triathlon, set against the backdrop of the stunning Boulder landscape.
Following the swim, participants transition to the bike segment, which consists of a two-loop course. This bike course is designed to test the endurance and skill of the athletes while offering breathtaking views of the surrounding area. The route is carefully planned to showcase the picturesque scenery of Boulder and its natural surroundings.
The final leg of the triathlon is a two-loop run course, which includes a unique mix of terrain. Participants will run on sections of trails and hard-packed dirt roads, providing a diverse running experience. One of the highlights of the run course is the stunning views of the Boulder Reservoir, which serve as a constant reminder of the natural beauty encompassing the event.
In June 2023, Boulder, Colorado experienced a variety of weather conditions. The highest temperature recorded during the month was about 32.8°C (91°F), occurring on June 27th. The lowest temperature was around 7.8°C (46°F) on June 17th. The average temperature throughout the month was approximately 16.7°C (62°F).
The month of June in Boulder also saw various precipitation events, including thunderstorms and light rain. Notable weather days included June 1st with a thunderstorm in the vicinity, light rain, and mist, as well as June 4th, which experienced heavy rain and thunderstorms. Another significant day was June 21st, with thunderstorms accompanied by heavy hail and rain. These precipitation events added variety to the weather patterns in Boulder, contributing to the overall climate experience for the month.
The water temperature in Boulder Reservoir typically ranges from around 18°C to 22°C (mid-60s to low-70s F) in June.
