About RunPacePlan

Last updated 2026-10-20

RunPacePlan is a free set of running tools that work in your browser: a pace calculator, pace charts, treadmill conversions, heart rate zones, race-time predictions, pace bands and a training plan generator for 5K to 50K. Each page does one job and works straight away: there is no account and nothing to install.

How it works

• Everything runs in your browser. What you type or choose stays on your device; nothing is uploaded.
• Results are computed, not typed in. The examples on each page are produced by the same code the tool runs, and the code is tested against independently calculated results.
• Plans come from public rules, not from a coach’s book. The plan generator builds every plan from a set of rules we publish on the methodology page, together with the formulas the calculators use and the papers they come from. We do not copy or adapt published training plans.
• Not medical advice. The heart-rate and training tools give general estimates. If you have a heart condition, chest pain, are pregnant or are unsure whether running is safe for you, ask a doctor first.
• Third-party material used on the site is listed on the credits page.

If a tool gives a wrong result, please tell us through the contact page.

Who runs it

RunPacePlan is owned and operated by SKYSEED TECH LLC. You can write to us at support@runpaceplan.com.

Advertising

The site is free to use. We may show advertising in future to pay for hosting and development. If we do, ads will be labelled “Advertisement”, will never cover a tool, and are described in the privacy policy.

Trademarks

RunPacePlan is not affiliated with, endorsed by or sponsored by the Boston Athletic Association, The Run SMART Project or any race, coach or app named on the site. “Boston Marathon” is a trademark of the Boston Athletic Association and “VDOT” is a trademark of The Run SMART Project; the names are used only to describe what a page is about and belong to their owners.