Craft a warm, engaging news report highlighting Redmond’s weekend events for Oct 5, drawing from the listed happenings: a Sunday morning trail walk along Sammamish River Trail, a Capitol Hill urban casual hike, and a local arts event. Describe who’s involved, where they meet, approximate times, and what attendees can expect, weaving in the friendly, communal vibe and any logistical details found. End with a note inviting readers to join these community activities and where to find more information.