Terms and disclaimer.

Acceptance and scope

By using TruePace Run, you agree to these terms. If you do not agree, please do not use the site.

These terms apply to the TruePace Run website, calculator pages, examples, articles, methodology notes and policy pages. The site is published as an independent running tool and editorial resource.

Permitted use

You may use TruePace Run for lawful, personal, club, editorial or research-style reference purposes. You must not misuse the site, disrupt its operation, attempt to bypass security, scrape it at unreasonable scale, or present calculator outputs as official race results or official rankings.

Intellectual property

The TruePace Run name, branding, page design, editorial content, examples and custom calculator implementation belong to TruePace Run or Robin Langdon unless stated otherwise.

The calculator uses sourced 2025 road-running age standards from the Alan Lytton Jones Age-Grade-Tables project, which is made available under CC0-1.0. TruePace Run credits that source in the methodology and calculator output, but does not claim ownership of the source standards.

Informational use only

Calculator results are not official rankings, race results, medical advice or coaching advice. Use them as context alongside training history, health, recovery and race conditions.

Articles are written to help runners understand age grading, performance context and related running topics. They are not a substitute for advice from a qualified clinician, coach, dietitian or other appropriate professional.

Calculator estimates

TruePace Run aims to make calculator outputs clear and useful, but age grading is still an estimate. It does not adjust for heat, humidity, wind, hills, terrain, course measurement, congestion, pacing, illness, injury, shoes, training history or race-day decisions.

The site is independent from parkrun, World Masters Athletics, USATF, race organisers and timing providers. Official results remain with the relevant event or organiser.

No guarantees

TruePace Run is provided on an "as is" and "as available" basis. The site may contain errors, become unavailable, change calculation methods, update source data or revise editorial content.

We try to keep the site useful, accurate and maintained, but do not guarantee uninterrupted access, perfect accuracy, particular fitness outcomes, race performances or AdSense/advertising availability.

Limitation of liability

To the fullest extent permitted by law, TruePace Run and Robin Langdon are not liable for losses arising from reliance on calculator outputs, editorial content, external links, site downtime, data-source changes or decisions you make about training, racing, nutrition, health or competition.

Nothing in these terms limits liability where it would be unlawful to do so.

External services and advertising

TruePace Run links to external websites and sources. Those sites have their own terms, privacy policies and content standards. Links are provided for context and do not imply endorsement or affiliation.

The site may use third-party services, including Google AdSense and a Google-certified consent management platform. Advertising and consent services are governed by their own policies as well as the choices you make where consent is requested.

Changes to these terms

These terms may be updated as TruePace Run develops. Continued use of the site after changes are published means you accept the updated terms.

Governing law

These terms are intended to be governed by the laws of England and Wales, unless mandatory local consumer or privacy rules give you additional rights.

Contact

Questions, correction requests or concerns can be sent to hello@truepacerun.net.