RUNNING TOOLS

Tools for smarter running

Practical calculators that turn a target time and training data into clear pacing and useful next steps.

Start with a concrete calculation. Pacero tools are free, run directly in your browser, and help you understand your goal and training more clearly.

Running pace calculator

Calculate pace, target time, speed, race splits and an indicative performance over other distances.

Calculate Z1–Z5 from maximum heart rate, heart rate reserve or LTHR and understand what each zone is for.