Lake Sumner Forest Park lies 100 km northwest of Christchurch between Lewis Pass and Arthur’s Pass National Park.
To reach the park via Lake Sumner Road: take State Highway 7 at Waikari to Hawarden, then follow Lake Sumner Road to Lake Taylor. The road beyond Lake Taylor is suitable for 4WD vehicles only to Loch Katrine (camping area).
The 4WD track from Loch Katrine to the Hurunui swingbridge at the boundary of Lake Sumner Forest Park crosses Lakes Station land. There is a locked gate on road by Loch Katrine. There is no restriction for foot or mountain-bike access through this gate, but vehicle access must be gained from Lakes Station. DOC is unable to provide contact details.
It is around 9 km (2–3 hours walk) from Loch Katrine to the Hurunui swing bridge.