The Apple Fun Run/Walk is part of the festivities of the annual Apple Harvest Festival in Onalaska, WA. Following the race there is a full day of activities for all ages, you can find a list of events at http://onalaskaalliance.org/
Trail and road race.
Take exit 71 for Onalaska. Follow Highway 508 out to Onalaska and take the first left onto Alexander Road, which will take you to the Historic Carlisle Lake and Smokestack where the race begins. Plenty of parking.