Two day Hike around Brisbane

Hi Everyone.
I'm very new to this so needing to get a few over night trips in.
I'm looking for some good hiking days where I would walk around 4-6kms difficult or 8 - 12 kms not so hard.
I am training for Overland Track so will be carrying all my gear with me.
I want to be able to camp that night then head back or do a loop if you know of one.
I would normally be leaving around 2pm on a Saturday afternoon.
Love to get some ideas as im looking to go this weekend.
I'm very new to this so needing to get a few over night trips in.
I'm looking for some good hiking days where I would walk around 4-6kms difficult or 8 - 12 kms not so hard.
I am training for Overland Track so will be carrying all my gear with me.
I want to be able to camp that night then head back or do a loop if you know of one.
I would normally be leaving around 2pm on a Saturday afternoon.
Love to get some ideas as im looking to go this weekend.