We can get upwards of 4000 in a once a month bike nite in Indianola Iowa. They call it the midwests biggest. They shut down the square have live music and vendors setup all over a real good time. Also on a weekly basis in Des Moines we have a good one at Radical Cycles on Thrusday. They are taking over where Porkys is leaving off. Can get several hundred to a thousand bikes.