Heat Adjusted Pace Calculator
Running PerformanceCalculate how hot weather affects your running pace. Use the Heat Adjusted Pace Calculator to train smarter and race safely in warm conditions.
per km
equivalent effort
At weather station (10m)
After terrain adjustment
Headwind/tailwind effect
Impact on your pace
Wind resistance increases exponentially with speed. Research by Pugh (1971) shows:
Wind measurements are taken at 10m height. Ground-level wind is affected by:
• Lean slightly forward to reduce frontal area
• Shorten stride, increase cadence
• Focus on effort, not pace
• Draft behind other runners when possible
• Maintain form, don't overstride
• Use the assist but stay controlled
• Save energy for headwind sections
• Be aware tailwind benefit is less than headwind cost
A 10 mph headwind can slow you by 10-15 seconds per mile at marathon pace. The effect increases exponentially with speed.
Running mechanics are optimized for forward motion. Headwinds create additional work, while tailwinds reduce work but don't eliminate all metabolic costs.
Drafting 1 meter behind another runner can reduce air resistance by up to 80%, saving significant energy. This is why pack running is common in races.
Yes! Plan to run slightly faster on tailwind sections and slower on headwind sections. Focus on effort level rather than pace when facing strong winds.
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