Poronui Station to Makahu road via Venison Tops. A faster group should be able to cover the route in 4 days while a more leasurely pace could have you stretching it out to closer to a week. For those with little experience in river travel an alterative to the Makino river is to take the much slower and hillier route via Makino hut.
Transport is a problem but a two party cross-over or a club trip provides for cars at both ends...