Pacing & Racing
Plan efforts and race goals.
Training tools
Running calculators.
Plan races, set paces, and track fitness with precision.
All Calculators
Every tool in one place.
Training Zones
Dial in the right intensity.
Health & Recovery
Stay balanced between efforts.
Running calculator FAQs
Which calculator should I start with?
Use the pace calculator to convert finish times into pace targets, then plug those paces into the race predictor to map realistic goals for upcoming events.
How can I fine-tune training intensities?
The heart-rate and VO₂ / VDOT calculators translate race results into specific intensity zones so every workout lines up with aerobic development, tempo work, or speed training.
Do you cover recovery and off days?
Yes. The recovery guide and planner tools include sample down weeks, easy run suggestions, and reminders to schedule strength and mobility alongside hard sessions.