2016 Manilla Madness Ride on Saturday, May 7th: Registration begins at 8:00 a.m. in the Denison Hy-Vee Parking Lot. Ride begins at 9 a.m. and includes a scenic 28 mile ride with thrills, chills and hills through beautiful Crawford County. New 48 mile (total) option to Irwin and back! $25 includes a commemorative t-shirt. Contact the CDC office at 263-5621 to register.