The main difference between a virtual event and an in-person event in Boston is that a virtual event can be completed from anywhere, while an in-person race requires participants to physically be at the event location on the event date. In a virtual event, participants can complete any form of intentional movement, at their own pace and on their own schedule, while an in-person race follows a set course and schedule. Virtual Participants have their event swag and finisher medal mailed to them for an added fee.