TREN
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Terms of Service

Last updated: 21 June 2026

These Terms of Service (“Terms”) govern your access to and use of TREN — a training service for runners, available as a website and an app (the “Service”). The Service is provided by Hafnor Investment AS (“TREN”, “we”, “us”), Trollkleiva 58E, 4638 Kristiansand, Norway. By creating an account or using the Service, you agree to these Terms. If you do not agree, please do not use the Service.

The service

TREN lets you connect your training data from third-party providers such as Strava and Garmin, and calculates things such as training load, injury risk (ACWR), fitness level (VDOT) and training plans. The Service provides training guidance based on the data available to it, and the outputs are estimates. We may add, change or remove features over time.

Eligibility

The Service is intended for adults. You must be at least 16 years old to create an account and use the Service. By using the Service, you confirm that you meet this requirement.

Your account

  • You are responsible for the information you provide and for keeping it accurate.
  • You are responsible for keeping your sign-in credentials secure and for all activity that occurs under your account.
  • Notify us promptly at prebenhafnor@gmail.com if you suspect any unauthorised use of your account.

Connecting third-party services

The Service can connect to third-party providers (such as Strava, Garmin, Google and Apple) at your request. When you connect such a service, you authorise us to access and process the data needed to provide the Service, as described in our Privacy Policy. Your use of those third-party services is governed by their own terms and privacy policies. We are not responsible for third-party services, their availability, or the accuracy of the data they provide. You can disconnect a connected service at any time.

Acceptable use

You agree not to:

  • use the Service for any unlawful purpose or in breach of these Terms;
  • access another user’s account or data without authorisation, or misrepresent your identity;
  • interfere with, disrupt or place an unreasonable load on the Service or its infrastructure;
  • attempt to reverse engineer, scrape, copy or extract the Service or its data, except as permitted by law;
  • upload or transmit malware, or attempt to gain unauthorised access to any systems.

Health and safety

TREN provides training guidance and is not medical advice. Calculations of recovery, injury risk, training load and similar are estimates and do not replace advice from a doctor or other healthcare professional. Physical training carries inherent risks. You are responsible for your own health and for training within your abilities. Consult a qualified professional before starting, changing or intensifying any training programme, and stop and seek medical attention if you experience pain, illness or injury. You use the Service and follow any guidance at your own risk.

Your data and content

You retain your rights to the data and content you provide or connect. You grant us the rights necessary to host and process this data to operate and provide the Service. How we handle personal data is described in our Privacy Policy.

Intellectual property

The Service, including its software, design, text and other content (other than your own data), is owned by TREN or its licensors and is protected by intellectual property laws. We grant you a limited, non-exclusive, non-transferable, revocable licence to use the Service for your personal, non-commercial use, subject to these Terms.

Fees

The Service is currently provided free of charge. If we introduce paid features or subscriptions in the future, we will inform you of the applicable terms and pricing before they apply to you, and any payment will require your agreement.

Availability and changes to the service

We aim to keep the Service available and reliable, but we provide it on an “as is” and “as available” basis. We may modify, suspend or discontinue all or part of the Service, and we will give reasonable notice of material changes where practicable.

Disclaimers

To the extent permitted by law, the Service is provided without warranties of any kind, whether express or implied, including as to accuracy, fitness for a particular purpose, or uninterrupted or error-free operation. We do not warrant that the estimates, recommendations or data provided through the Service are accurate or complete.

Limitation of liability

To the extent permitted by law, TREN shall not be liable for any indirect, incidental or consequential loss, or for loss of data, arising out of or in connection with your use of the Service. Nothing in these Terms limits or excludes liability that cannot be limited or excluded under applicable law, including your mandatory rights as a consumer. These Terms do not affect your statutory consumer rights under Norwegian and EU law.

Termination

You may stop using the Service and request deletion of your account at any time by emailing prebenhafnor@gmail.com (see the Privacy Policy for how we handle deletion). We may suspend or terminate your access if you materially breach these Terms or use the Service in a way that may cause harm to us or others. Provisions that by their nature should survive termination will continue to apply.

Changes to these terms

We may update these Terms from time to time. For material changes, we will give notice at tren.run with reasonable advance notice before the change takes effect. Your continued use of the Service after the changes take effect constitutes acceptance of the updated Terms.

Governing law and disputes

These Terms are governed by the laws of Norway, without prejudice to any mandatory consumer protections of the country in which you reside. If a dispute cannot be resolved amicably, it may be brought before the Norwegian courts. As a consumer, you may also have access to out-of-court dispute resolution.

Contact

If you have any questions about these Terms, you can contact us at prebenhafnor@gmail.com.

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