Get ready for some fun in the sun and a great mid-season test of your training and fitness as All-Out Multisport brings Dog Days 5K, 10K & Half Marathon to Westminster’s award winning City Park! Centrally located between Denver & Boulder, and just a mile off US 36, the beauty of our breathtaking Flatirons as a backdrop will remind you why you live here. Plus, Big Dry Creek Trail is well know as a Colorado favorite!