2022-06-03 Tri County ATV Summeride Opener Tri County ATV Summeride Opener June 3, 2022 - June 5, 2022 Tri County ATV Summeride Opener 20th Anniversary! Start of Summer! Family Fun Weekend! DASH FOR CASH! Sleep under the stars! Bring the Side by Side and the camper!! Gates open Thursday at 5PM ~ $25 per person/weekend; children under 12 free