Irvine Park. 7am-5pm. 715/723-0331. www. chippewavalleyride.us/ (Chippewa Co.) Find more fun at travelwisconsin.com or call 1-800/432-8747. FIFIELD Lawn Mower Races: Time trials are one hour before races. Six classes of races - IMOW, AP, SP, STOCK, BP, and FX plus kids' ...