To see if you're eligible for a Refund, make sure you are logged into Race Space, go to your 'My Entries' tab and click 'Entry Actions'. If you see a button named 'Refund Entry', this means that the event organiser allows Refunds.
In this case, go ahead and refund yourself!
The race organiser decides whether Refunds are allowed and what fees might be involved. The amount you receive after the Refunds is processed is dependant on the amount charged by the race organiser for the action.
Note: For any disputes surrounding Refunds, your best option is to get in touch with the race organiser.