This ongoing program runs daily from Monday, Dec. 1, through Wednesday, Dec. 31. Savor the last days of 2025 with the December Dash Virtual 5K! Choose one of 10 select Forest Preserve trails to run your own 5-kilometer race sometime in December. Download a running app to your smartphone that will track your run, run the 3.1 miles, take a screenshot of your route and mileage and submit in online. The first 100 participants to submit a valid 5K on a Forest Preserve trail will receive a commemorative December Dash long-sleeve shirt. Trails are as follows: DuPage River Trail Hickory Creek Bikeway Lake Renwick Bikeway Messenger Woods Nature Preserve Trail Old Plank Road Trail Plum Creek Greenway Trail Prairie Bluff Trail Rock Run Greenway Trail Spring Creek Greenway Trail Wauponsee Glacial Trail