Lace up your shoes for the Heritage Harbor parkrun, a free, fun, and friendly weekly 5K event held every Saturday morning at the picturesque Heritage Harbor in Ottawa, IL. On January 31, 2026, participants can expect typical race day conditions with highs around 31°F and lows near 13°F, and a low 10% chance of precipitation, making for a brisk and invigorating start to the weekend. The 9:00 AM start time during these cooler months allows for a more relaxed morning before hitting the course.

The accurately measured 5K course treats runners and walkers to two scenic laps along the paved harbor wall walkway, offering breathtaking views of Heritage Harbor and the Illinois River. The terrain is a mix of concrete paths, gravel paths, and some trail sections, which may hold mud, leaves, or puddles after rain, adding a dynamic element to your stride. Starting and finishing near the parking lot by the Bluegill Boathouse and Marina Bar, this volunteer-organized event welcomes all ages and abilities to run, jog, walk, or simply spectate.

Heritage Harbor parkrun stands out for its strong sense of community and inclusivity, inviting seasoned athletes, casual joggers, and families with leashed dogs to enjoy the beautiful surroundings. While there are no formal aid stations, restrooms are available on-site. It's more than just a run; it's a chance to foster community ties and embrace an active lifestyle, often continuing with a post-parkrun breakfast at a local spot on the first Saturday of each month.