All calculators
Heat & Humidity

Heat-adjusted running pace.

When dew point climbs, your body works harder at the same pace. Slow down to keep the intensity right. We use temperature + dew point to estimate the percentage to add to your goal pace.

Dew point
22.0°C
72°F
Slowdown
+6.0%
Heat-adjusted pace
5:18/km

How to read it

  • • Dew point under 13°C/55°F — minimal impact, race your goal pace.
  • • 13–18°C / 55–65°F — noticeable, plan for 1–3% slower.
  • • 18–22°C / 65–72°F — significant, consider conservative pacing and extra fluids.
  • • Over 22°C / 72°F — adjust goals, prioritize finishing & hydration.