The Des Moines Botanical & Environmental Center Pedal to Petals bicycle ride is set for 10 a.m. Sunday at the center, 909 Robert D. Ray Drive. Three rides -- 8.3 miles, 20.5 miles or 35 miles -- will follow trails and streets within Greater Des Moines. Registration fees are $30 in advance or $35 the day of the ride. To register, go to