Cycle or Rollerblade around Centennial Park

Centennial Park is one of Sydney's greatest assets, and one of the few large parks around the centre of the city.
It covers 360 hectares of grass, lakes, gardens, and forest, and has a large number of flat roads and paths which are perfect for cycling and novice rollerbladers.
Here is a map of the park.
It will take you about 30 minutes to leisurely cycle your away around the circular Grand Drive, and about 90 minutes to make your way around on Rollerblades if you are a beginner.
It's easy to hire bikes and rollerblades. If you enter the park from the Paddington Gate, then you'll see the hire station on the left just after you turn onto Grand Drive.
As well as regular bikes they also hire out 4 wheel cycle buggies which are a lot of fun.
Don't worry if you've never rollerbladed before. Centennial Park is the perfect place to learn and you won't be the only one teetering around and crash landing on the grass.
There are lots of great spots for a picnic in Centennial Park, just drive or walk around until you find somewhere you fancy. There are also public BBQs scattered here and there and a very nice cafe/restaurant as well.
You can usually find a park in Centennial park itself without too many problems, and Oxford St is well served by buses.
If you are going on a Saturday you could go shopping in the morning on Oxford St and at the Paddington Markets, then grab some food from a deli (or the markets), wander down to the park and eat, sleep it off on the grass, and then go for a cycle or rollerblade. Makes for a great day.