The UFC returns to Boston next week for its debut event on FOX Sports 1, and fans are invited to a host of activities around Beantown. The city’s TD Garden is the site of next week’s “UFC Fight Night 26: Shogun vs. Sonnen” event, which takes place on Saturday, Aug. 17, and airs both main-card and preliminary matchups on the brand-new FOX Sports 1 channel following three additional prelim contests that stream on Facebook. However, the UFC-related activities start much earlier in the week. The sessions start on Tuesday, Aug. 13, where Peter Welch’s Gym plays to a workout for fast-rising Irish featherweight Conor McGregor , who meets Max Holloway at next week’s UFC Fight Night 26 event. McGregor’s workout starts at 3 p.m.