Travel Note
Enter the park. Stop at the ranger kiosk at the entry and tell them you are going to a wedding at the Retreat Center. Follow signs for "Retreat Center" and "Environmental Learning Center" all the way to the back of the park. Drive down the all the way down the gravel driveway to the Retreat Center until you get to the parking lot.
Travel Note
From I-5 Southbound -Take Exit 99 toward WA-121 S/93rd Ave -Turn left onto WA-121 S/93rd Ave -Turn right onto WA-121 S -Turn right to enter Millersylvania State Park From I-5 Northbound -Take Exit 95 for WA-121 N toward Littlerock/Maytown -Turn right onto WA-121 N -Turn left into Millersylvania State Park