Follow Redoubt Road from its junction with Mill Road right through to its ending at Regis Lane. Turn right into Ormiston Road and follow along into Sandstone Road, before turning right at Whitford Park Road, and following  this busy road  four kilometres until  turning left into Twilight Road, for 1.5 kilometres before  turning left into Kimptons Road, and following it through another 1.5 kilometres. Just before the quarry a metalled road leads away right, and the start of Kimptons Track is a few hundred metres up this road. 

Te Araroa Auckland Trust is working to replace this 17 km section with a more direct route. Redoubt Road has good footpaths for much of its distance, though not all, and is a great ridge lookout over Auckland. It crosses under the flight path into and out of Auckland International Airport, and though they're still fairly high, descending or ascending aircraft are a feature. The road was named for a military redoubt set up by the British during hostilities between Maori tribes and the British Crown in the 1860s. Aside from Redoubt Road, this bypass is primarily a walk along road shoulders. Be careful.