If you only have the time or energy to walk one track in Wallarah, then take the Coastal walking track for the best of everything this park offers. This walk has gorgeous coastal and ocean views.
Look out for passing humpback and southern right whales during winter. You could birdwatch along the way. Enjoy the wildflowers in spring, and experience the various types of vegetation and habitats the track takes you through at their peak. You can easily pick out the cabbage-tree palm; it grows up to 25 metres.
Did you bring your surfboard or fishing rod? The Coastal track also leads to Pinny Beach, which has coarse dark sand and is great for surfing and fishing. Further south is another fishing spot called Shark Hole. Remember to wear a lifejacket when fishing off any rock platform.