The Cinco de Mayo Festival held in Greeley is one of the largest multicultural festivals in Colorado. The festival will take place on Saturday, May 5th, 2018 from 9:00 a.m. to 7:00 p.m. at Greeley’s Island Grove Regional Park.2018 marks the 33rd Annual Cinco de Mayo Greeley Festival and it’s going to be a celebration, to say the least. This year, the festivities will include live music, a kids play area that includes multiple “bouncy” houses, and enough food vendors to satisfy the most insatiable appetite. The yearly car show attracts enthusiasts and dreamers alike. This year will be extra special with the second annual Copa de Greeley soccer tournament.