If you are looking for an adventurous and interesting hike without even leaving the Brisbane area, Enoggera Reservoir is a fantastic choice that is rarely fully explored even by Brisbane locals. This hike has everything: It is public transport accessible, there is a cafe at the beginning and end of the hike and a variety of beautiful terrain, including lake views.
Note: This hike is off marked trails. Even though it is hard to get lost, Engoggera Reservoir backs onto D'aguilar National Park so getting lost means you might end up walking for additional hours. It is recommended that you take either topographical maps or download maps of the area into your GPS or phone.
The best place to start this hike is at Walkabout Creek Wildlife Centre. If you come by bus you will need to walk up the road to Walkabout Creek. You start along the Enoggera circuit track which is not the full circuit of the reservoir so you will need to veer off onto a fire trail. This is unmarked at the moment so a GPS phone comes in very handy at this point. Just look for a track going away from the lake along the Enoggera circuit track.
The initial section of the track goes over a series of ridges that could be challenging if you are a little out of shape, but once over these the track is much easier and flatter.
The end of the hike is the only tricky part where you want to come out at Payne Road followed by a little bit of suburb walking to get back to where you started.
However you will probably notice tracks that locals use to get around the dam. These will take you to SEQWATER property. While local kids seem happy to do this, jumping razor wire and making holes in fences, it is recommended that you take the Payne Road exit.
After the hike you can relax and the Green Tree Frog Cafe which includes a fascinating little zoo underneath.