If your plans change, you can return your Interrail Pass in exchange for another Pass or an 85% refund. As long as you can prove that your Pass wasn’t used, and you send it back within 1 month of its validity period, you can apply for the refund.
A refund or exchange of Interrail Passes is possible under these conditions:
The Interrail Pass has been endorsed ‘NOT USED’ by railway staff before or on the first day of validity.
Your request is received within 1 month after the last day of validity of the Interrail Pass.
You ordered your Interrail Pass directly from Interrail.eu.