Some races offer shipping of the race swag. If you need to update the shipping address for any reason, the race may allow you to correct this from your profile.
On certain races, the race director may give you, as the runner, the ability to change your shipping address by following these steps:
Sign In to RunSignup
Go to your Profile
See Upcoming Races
Click Manage Registration next to the registration that you are editing
Click the Shipping tab.