Smiths Creek is a tidal creek located within Sydney, New South Wales, and is a tributary of Cowan Creek, which flows into the Hawkesbury River. It is situated within the Ku-ring-gai Chase National Park, north of Sydney. The primary access point for paddlers is the boat ramp at Bobbin Head. From here, the standard paddling route is a return trip along the creek, covering a distance of approximately 13 to 15 kilometres round trip. This journey typically takes between 2 to 3 hours to complete. Another documented route is an out-and-back paddle from Akuna Bay to Smiths Creek, which is longer at about 14.3 miles or 23 kilometres return. Paddling sports such as canoeing, kayaking, and stand-up paddleboarding are permitted on these routes. Paddlers should always check if a permit is required, as the area is part of a national park. The creek's character is defined by its location within a protected national park, suggesting a natural environment. The water is tidal, being influenced by the Hawkesbury River system. The area around Bobbin Head provides facilities for boaters, including a ramp. The wider region is known for its bushland and waterways, indicating that paddlers can expect a setting of native Australian flora and potential wildlife sightings.