Harpswell Lobster Boat Races Mark your cruising calendar. The 2021 Harpswell Lobster Boat Races are just around the corner. Head over to Potts Harbor on July 25th to catch the action. Races start at 10 am. Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment.