If you are looking for event-specific information, such as start-times, packet pickup, etc. you will want to contact the promoter for the event. Promoter contact information is listed on every event on athleteReg. Underneath the event title and date there should be a blue box with Event Contact and Event Website. Clicking on Event Contact will bring you to a form that you can use to contact the event promoter, and usually a phone number and a website address.
Head to the website that you used to register to search for your event: