Fall Fitness Classes 2016 by Heather Hazlett · Published September 8, 2016 · Updated September 8, 2016 Spice up the fall season and keep active with one of these exciting classes offered by Delavan-Darien Rec department. Interested but have questions? Please call 728-5585 option 2; we’re happy to share our excitement about these awesome classes! Register at Delavan Parks and Recreation Dept. Online Registration System.