Lace up your shoes for the Cornerstone Lakes parkrun, a vibrant 5K community event held weekly in West Chicago, IL. On Saturday, August 15, 2026, participants can enjoy a free, timed 5K on a flat and fast course consisting of two clockwise laps on permanent asphalt paths that wind around the scenic perimeter of the main lake. The course is known for its good vibes and welcoming atmosphere, attracting walkers, joggers, and runners of all abilities. While the paths are generally well-maintained, be aware that some sections might accumulate mud, leaves, or puddles after rain.

This volunteer-led event takes place within the beautiful 41-acre Cornerstone Lakes Park, offering a pleasant backdrop of native plant life and various wildlife, including cranes, egrets, and geese. The start and finish lines are conveniently located adjacent to the main parking lot off Smith Road, near the baseball field. Typical race day conditions in mid-August bring pleasant temperatures, with highs around 83F and lows around 62F, and a relatively low 13% chance of precipitation.

Cornerstone Lakes parkrun distinguishes itself through its inclusive, community-focused ethos, providing a consistent opportunity for physical activity and social connection. After crossing the finish line, many participants extend the camaraderie by gathering for a post-run coffee at a local Starbucks. While official aid stations are not provided, volunteers are on hand, and events typically have access to a first aid kit and an Automated External Defibrillator (AED). Remember to bring your barcode for timing and consider joining the friendly group that makes this weekly 5K a highlight for many.