Don your best Irish and join in Shamrock'n the Harbor! Shamrock'n the Harbor 5K/12K is a timed out-and-back course starting at the Cushman Trail Park in Gig Harbor, WA, benefiting the Gig Harbor Senior Center. You'll run along the gorgeous Cushman Trail towards the Tacoma Narrows Bridge. Both courses have a few rolling hills to help keep those legs awake and working. 5K participants