The Inland Kaikà Âura Road, formally designated Route 70, is a local highway in the South Island of New Zealand that runs from just south of Kaikà Âura to just north of Culverden via Waiau, Rotherham and Mount Lyford Village. It follows the same route as the former State Highway 70. White shields marked with "70" are used to signify this highway. It forms part of the Alpine Pacific Triangle touring route, and also serves as an alternative inland route for State Highway 1 in the event of a closure. Following the 14 November 2016 Kaikà Âura earthquake, all roads into Kaikà Âura were closed including the Inland Kaikà Âura Road. After extensive regrading and clearance, the Inland Road was the first road connection to Kaikà Âura to reopen and served as a lifeline for the community in the wake of the earthquake.
Because of its scenic qualities it is now noted as one of the must-drive roads in New Zealand. The road is two lanes for its majority, however in parts it is narrow and winds through steep hill country with several river valleys, including one-lane bridges.
State Highway 70 lost its state highway status due to a lack of substantial use, and as part of a wider re-alignment of the State Highway system to focus on routes of national significance, as opposed to regional significance. In 1991 the section from Waiau to Kaikà Âura was revoked. Before revocation approximately of highway was unsealed; this was later sealed by the two district councils which maintained it. The remainder of SH 70 was revoked in 2004.
The road was closed following the 2016 Kaikà Âura earthquake and was for a few days open to the military only; the first army convoy reached Kaikà Âura on Friday, 18 November 2016, and this remained the only land route into Kaikà Âura as SH1 was completely cut off by the earthquake. Some time later, registered convoys were allowed. Unrestricted access was restored on 19 December 2016, giving the public road access to Kaikà Âura again.
The route primarily runs inland at the foot of the Kaikà Âura Ranges after turning from SH 1 immediately south of the Kowhai River. It runs parallel with the river before it turns south west running almost parallel to SH 1 in an adjacent valley. After crossing the Conway River, the road becomes known as the "Inland Road" as opposed to the "Inland Kaikà Âura Road". It continues south, eventually passing the intersection with Mt Lyford Forest Drive (for access to Mount Lyford Village and Ski Area), before becoming Leslie Street within the town of Waiau. The route makes a turn westward in Waiau onto Rotherham Road North, which it remains on until the town of Rotherham, where it transitions into George Street and eventually Rotherham Road South. The route concludes at the junction of Rotherham Road South and Mouse Point Road (State Highway 7) at "Red Post".