The Somerset Lookout in D'Aguilar National Park is stunning. You can access it by foot (13km return hike on the Somerset Trail) or by 4WD.
If you're looking for a short hike near Brisbane with a bit of a challenge, Mount Blaine Summit Track may be the perfect option for you. But only if you're keen to scramble and don't mind feeling off track.
I was looking for a long hike to test my fitness when I found Gheerulla Valley Circuit in Mapleton National Park. It did not disappoint.