Points from only six of the seven rounds are to be counted towards the championship, with riders to discard their one worst result, so the race for the outright win, and the various class titles too, could remain wide open right until the double-header final showdown near Hokitika in July.
Round five this Saturday takes riders to Callaghan's property, 366 Mangarei Rd, off the Te Ore Ore Bideford Rd, about 26km east of Masterton.
"The course is steep farmland and will be moderately challenging," said Motorcycling New Zealand (MNZ) enduro commissioner Justin Stevenson.
"The course will be similar to what the riders encountered at Martinborough, with a bit of forestry thrown in. It will be something for everyone, certainly a very interesting ride, with creek beds to deal with too."
The 2019 Yamaha NZ Enduro Championships are supported by Mitas tyres, Macaulay Metals, Best Build Construction, Silver-bullet, Kiwi Rider magazine, Dirt Rider Downunder magazine and Moto Events NZ.
Remaining rounds
Round 5 — Saturday, June 29 — Bideford, Masterton
Round 6 — Friday, July 19 — Hokitika, Westland
Round 7 — Saturday, July 20 — Hokitika, Westland