Tune-up for your summer running with a half marathon or 10K. Both races start at Westchester Lagoon and follow the Chester Creek Trail on an out-and-back course.Half marathon Walk: 8 a.m.; Half Marathon: 9:00 a.m.; 10K 9:20 a.m. The “Sleeping Lady Challenge” is back! Run this race and at least two other Anchorage Running Club qualifying events and receive the Sleeping Lady Challenge medal to commemorate your accomplishment. AnchorageRunningClub.org.