Aug long weekend ideas?

I know we are super late to booking (we've had some illnesses in the family so haven't had time to think ahead, and now it's July)... Does anyone have any ideas for an extra long weekend getaway, Thurs - Tues, during the August holiday weekend? We are in KW, we like camping and hiking, being outdoors etc, but obviously all the campsites are booked up solid for that weekend. We're okay with driving a fair bit, even 5 hours or so is okay. Just looking for some ideas, seems like every idea I come up with is booked up 😅😅

Initially we had planned a longer trip to head up to Sault Ste Marie / Lake Superior to go hiking for a week but I'm not sure it's doable for this short of a trip.