I'm training to swim 8 miles again (summer 2026. 2025 got away from me). Being an open water distance swimmer in Idaho can be difficult but it's not impossible. I'm hoping the USMS community can share what they have learned about swimming in cold fresh water.
Results: My first swim was completed in approximately 4hrs 15 minutes
Goal: cut down my swim time to 3hrs 30 minutes (cutting 5 1/2 minutes per mile)
Background: I live in a small town of 520 people with no access to a public swimming pool. The nearest pool is a 90-minute drive. As a result, I purchased a propulsion pool to train for distance swimming. I live at 6,000 ft elevation. The reservoir is close at 5,500 ft elevation.
Reservoir swimming: Most of the "lakes" around me are man-made. Utilized for watering the crops in the area.
Timeframe: The reservoirs are frozen for 4 - 6 months per year. The best time to swim a reservoir is mid to late July.
Water temperature: The water is typically 50 - 55 degrees F.
Training regimen: I make a plan. The plan is broken down into the overarching goal, swim 8 miles. From there, it is broken down into monthly, weekly goals.
For example, my monthly goal is to increase my swim time from 40 minutes to 60 minutes. 1st week goal is maintaining 50 strokes per minute (SPM) for 40 minutes, 2nd week goal is maintaining 45 SPM for 45 minutes, 3rd week goal is maintaining 50 SPM for 50 minutes, 4th week goal is maintaining 45-50 SPM for 60 minutes.
I use SPM because I have ProForm goggles that display SPM information for me to track.
Cold training: My pool is kept at 68 degrees F. Two months prior to my swim, I will start doing short swims in the reservoir. This really helps get the body used to the cold water.
Lesson learned: My first swim was with a swimsuit, cap, and goggles. This next swim will be with a 3mil wetsuit, cap and smart goggles. After my last swim, I was frozen by the time I got to mile 7 of 8 and it took 2 hours to warm up.
Other training: I incorporate strength training, cardio, and flexibility exercises into my training program. I have come to love warming up on my echo bike (10 miles), then its strength training (legs everyday), 1-mile walk on the treadmill at a 7 - 8 incline, followed by flexibility exercises and stretching.
Question to the group - What advice would you have for me to help me reach my goal of cutting 45 minutes off my swim???