Unfortunately, Boston Marathon bib numbers and entry fees cannot be refunded. Regrettably, we do not allow deferment of race entry to another year. Runner bib numbers cannot be transferred to another participant, and you may not give your number to someone else. The Boston Marathon is a top-level sporting competition, and the B.A.A. seeks to uphold the integrity of both its entrants list and field and the results and awards reports and rankings.
Refunds or deferments of bib numbers for the Boston Marathon will not be granted for any reason, including injury, pregnancy, military exercise or deployment, and family emergencies. We regret that we cannot make exceptions.
For active duty military deployments to war zones, deferment of qualifying times will be honored for a later race. However, there will be no refund or deferment of bib numbers or entry fee. The B.A.A. appreciates the understanding from all who ask this question of the race organization, and we appreciate the cooperation in upholding the policies that are in place.