Running in the Heat, Cold, Wind, and Rain: How to Train Through Any Weather

If you've ever shown up to a race and had the weather throw your entire plan out the window, this episode is for you.

Coach Brad breaks down what's actually happening inside your body when you run in the heat, cold, wind, rain, and at altitude, and explains how to adjust your training and racing when conditions aren't ideal. From the physiology of heat and your body's cooling system, to the Central Governor Model, dew point, cold weather layering strategies, and knowing when conditions cross the line from uncomfortable to dangerous, this episode will change the way you think about weather and running.

Whether you're preparing for a hot race, trying to survive winter training, or just want to stop dreading bad weather days, you'll walk away with practical strategies you can use on your very next run.

In This Episode Why weather is a training variable you should be planning for, not just reacting to What happens to your blood flow, ATP production, and cooling system when you run in the heat The Central Governor Model and why your brain slows you down before you're in danger How to use dew point as a better indicator of running conditions than temperature alone How to calculate your personal sweat rate and build an individualized hydration plan Heat acclimatization: the timeline, the process, and the remarkable adaptations your body makes The three stages of heat illness every runner needs to recognize Cold weather layering strategy and the "slightly cold at the start" rule Hypothermia stages and prevention Wind and rain strategies, including drafting, route planning, and blister prevention Racing at altitude: acclimatization, hydration, and setting realistic goals A practical framework for adjusting your race pace when conditions aren't ideal Key Takeaways In the heat, your body diverts blood from your muscles to your skin for cooling. This means less oxygen to your legs and reduced ATP production, which is why the same pace feels dramatically harder on hot days. Dew point is a more reliable indicator than temperature alone. Below 55°F is PR weather. Above 75°F, consider skipping the outdoor run entirely. Slow down and trust it. On hot days, if your easy run pace is 30–40 seconds slower than usual but it feels like conversational effort, that's the correct adjustment. Heat acclimatization takes 2–4 weeks, but the results are dramatic. After about 10 days, your sweating capacity can nearly double. In the cold, the "slightly cold at the start" rule is your