First Call 5k, 10k, & 1/2 Marathon

Join us at the First Call 5K, 10K, and Half Marathon in Waukesha on Sunday, March 22, 2026, to kick off your running season in style. Experience the thrill of running along the lightning-fast Glacial Drumlin and Fox River Trails, offering both speed and scenic views for seasoned runners and newcomers alike. Whether you're chasing a personal record or looking for a fun day out with loved ones, this event is the perfect start to an exciting 2026 race season. Don't miss out on the camaraderie and excitement of the Chilly Willy Winter Run Series – be part of the action and make unforgettable memories.