Last updated 24 September 2026.
KR Runs is run by me, Kevin Richardson, in Newcastle upon Tyne. I am the data controller for anything you share through this site. Contact me any time at kevin@krruns.com.
The calculator runs entirely in your browser. The times, years and goal you type in are not sent to me or stored anywhere unless you choose to email your arc to yourself.
Your results are saved in the page's web address, so your link reopens your arc. Anyone you share that link with can see the results in it, so share it as you would any personal record.
When you enter your email address and ask for your arc, I receive:
I use these to send you your arc and, if you confirm, occasional emails on closing the gap, tailored to your numbers. The lawful basis is your consent. You confirm it by clicking the link in the confirmation email, and you can withdraw it any time with the unsubscribe link in every email.
Kit (kit.com) sends my emails and stores the details above on my behalf. Kit is based in the United States, so your details are transferred outside the UK under Kit's data-processing terms. Netlify hosts this website and keeps short-lived technical logs, such as IP addresses, to run and protect it. I do not sell or share your details with anyone else.
This site sets no advertising or analytics cookies and does not track you across the web.
I keep your details while you are subscribed. If you unsubscribe, I keep only your email address on a suppression list so you are never emailed again. Ask me and I will delete everything.
If you email me directly, I use your message only to reply to you.
You can ask to see, correct, delete or take a copy of your data, to restrict or object to how I use it, and to withdraw consent. Email me and I will respond within one month.
If you are unhappy with how I handle your data, you can complain to the Information Commissioner's Office at ico.org.uk.