Halloween isn’t the only holiday that invites young and old to dress up. Rutland-area leprechaun lovers wear costumes of all shades of green for the sixth annual Shiver Me Shamrocks 5K Run/Walk. Youngsters launch the event with the free Leprechaun Leap Fun Run down Center Street, followed by athletes who take to the racecourse, vying for first-place titles by age and gender. Participants and supporters then gather at the Hop’n Moose restaurant for eats, drinks and awards, including best costumes. Proceeds benefit Come Alive Outside, a nonprofit that gets people off the couch and back outside for mental and physical health. Note that strollers are discouraged, and dogs aren’t invited.