Free Tool
Marathon HR Pacer | Marathon HR Pacer
Marathon HR Pacer - Target heart rate zones for marathon pacing
Built by an engineer who chases finish lines and is obsessed with data. Thomas Prommer — technology executive who has worked with Google, Apple, Nike, Adidas, Netflix and other global brands. Also an Ironman finisher, HYROX Pro Division competitor, and marathon runner. These tools combine engineering rigor with real race experience.
Marathon HR Pacer
Target heart rate zones for marathon pacing.
Methodology
Target heart rate zones for marathon pacing. Zone 2 (65-75% HRmax) for bulk of marathon, brief Z3 for hills.
FAQ
How does this work?
Target heart rate zones for marathon pacing. Zone 2 (65-75% HRmax) for bulk of marathon, brief Z3 for hills.
How accurate is this?
Based on established formulas with reasonable accuracy for most individuals.
Who should use this?
Athletes, fitness enthusiasts, and anyone looking to optimize their training.
Should I consult a professional?
Yes, especially before starting new training programs or if you have health conditions.
Results are estimates. Consult a professional for personalized guidance.