Not so fast there Capt. Quigg. Arrange a personal meeting with you minister, rabbi, priest or oman and see if they would not like to have the miles as a personal donation for church business. They may be willing to put something in writing that would satisfy the IRS and do some good within that religious entity. As long as the arrangement is done "in full faith" I don't think the IRS will bother you unless it's an "unreasonable' amount of moula.