500 W. Jackson Blvd.
This former quarry property was transformed into a community pool 80 years ago and now hosts the swim portion of triathlons held in Naperville. You get open water, but in a more controlled setting.
It’s not race day so you’re dealing with all the other water-goers who aren’t necessarily keen on swimming laps. Try to attend during adult swim. And when winter hits, consider joining other triathletes and Masters swimmers indoors at the Fry Family YMCA (where Garrison swims), Edward Health and Fitness Center with the Waves Swim Club, Vaughan Aquatic Center in Aurora, or Marmion Academy with the Academy Bullets.
What others say:
Jenny Garrison, a coach at Endure It and professional triathlete, notes that Centennial Beach is open to the public and has specific adult swim times.