Unfortunately, it is not possible to delete user accounts on RunSignUp.
If you are trying to unsubscribe to newsletters, you can do so by navigating to the very bottom of the newsletter and click on the blue unsubscribe link.
We use the information you provide about yourself and others when registering for an event only to complete the registration for that event. We do not share this information with outside parties except for the Event Director who is hosting your event.
For more information on RunSignUp's Contract & Privacy Policy, see here.