Heat Acclimation Tool
Build a smarter plan for hot race days
Get a personalized heat acclimation protocol based on your race date, expected conditions, experience level, and available setup.
What this calculator helps with
- 🌡️Match your prep to expected race temperature and humidity
- 🗓️See a structured schedule based on how much time you actually have
- 🧠Choose the best method for your access, recovery, and training load
- 🛡️Stay conservative enough to adapt without frying yourself
Create your protocol
Enter your race details, choose your heat-training background, and select the method that fits your reality.
Your personalized protocol
A phased plan built around your race conditions, timeline, and chosen method.
How to use the plan well
The calculator gives you structure. Your job is to layer in common sense. Progress exposure, protect recovery, and avoid stacking hard workouts with aggressive heat sessions unless you know you tolerate that combination.
What a good acclimation block looks like
- Starts controlled and ramps gradually
- Fits around existing training instead of bulldozing it
- Uses repeatable sessions you can actually execute
- Tapers heat stress slightly as race day approaches
Top mistakes
- Going too hard on day one
- Ignoring hydration and sodium losses
- Using exercise-based heat work on already heavy training days
- Waiting until the final week to start
Sample sessions
- Sauna: easy run, then 20-30 minutes dry sauna
- Hot bath: run or ride, then 25-40 minutes immersion
- Exercise-based: easy treadmill or bike in a warm environment with controlled intensity
FAQ
- No sauna? A hot bath works well for most athletes.
- When should the last big session be? Usually 48-72 hours before race day.
- What if I feel cooked? Shorten the next session or skip it entirely. Adaptation likes consistency, not heroics.
Pair this with your race-day pacing
Heat prep is only half the equation. Use the pacing tool to adjust effort and splits for the conditions you're expecting on race day.