Runs 10 a.m. until 5 p.m. in downtown El Reno, with food, crafts and entertainment. Carson and Barnes Circus will put on shows at Adams Park, with two shows daily at 4:30 p.m. and 7:30 p.m. Saturday and 1:30 p.m. and 4:30 p.m. May 6. For more information, consult the special Burger Day section.