Terms of Service

Marathon Compass rates races on course, weather, entry and cost, projects finish times and qualifying odds, and generates training plans. Race discovery is free and needs no account. Connecting Strava is optional and powers the training features.

This is the part worth reading. Everything the site computes — course effect, projected finish, qualifying probability, heat penalty, all-in cost — is an estimate produced by a model, not a prediction, guarantee, or professional advice.

• Race dates, fees, qualifying standards and entry rules change. We verify them and re-check periodically, but the organiser is always the authority — confirm with them before you enter or book travel.
• The Boston Athletic Association's official course designation governs any downhill adjustment, not our calculation of it.
• Weather figures are historical normals. A normal is not a forecast, and any single year can fall well outside it.
• Cost estimates assume one travel origin and are a rough model, not a quote.

Each figure carries its own source and confidence on the page it appears — see any race page's Evidence section, or the methodology.

Training plans are generated from published methodologies and your own activity data. They are not medical advice and we are not your coach or physician. Distance running carries real risk of injury and, rarely, worse. Consult a doctor before starting a training programme, and stop if something hurts in a way that isn't ordinary training fatigue. You train at your own risk.

Keep your sign-in link private and give accurate information — projections computed from a fictional race time are fiction. Don't scrape the catalog, attempt to bypass rate limits, or use the service to break the law. We can suspend accounts doing any of that. You can delete your account at any time.

Connecting Strava also binds you to Strava's terms. Links to race registration, hotels and other sites are outside our control and governed by their own terms; some may be affiliate links, as disclosed in the privacy policy. Powered by Strava.

The service is provided “as is”, without warranties, and may change or go offline without notice. To the fullest extent permitted by law, we are not liable for losses arising from your use of it — including entry fees, travel costs, missed qualifying windows or race outcomes. Nothing here limits liability that cannot be limited by law.

Material changes will be reflected in the date above. Questions: privacy@marathoncompass.com.