With support again from Suzuki New Zealand, and again staged by Taupo company Epic Events, the event has been growing in popularity each year and an estimated 400 riders signed up this time around to tackle the sixth annual running of the gruelling dirt bike marathon in the Tahorakuri Forest, on the road between Taupo and Rotorua.
Power led from the shotgun blast start and, caught in traffic and blinding dust, Groombridge found himself back in about 20th position as the riders entered the bush for the first time.
By the end of lap one, about 40 minutes later, Power still held the lead and handed off to team-mate Reeves, while Groombridge had obviously been on the charge and he arrived second at the pits, about 90 seconds behind Power.
"I found a comfortable pace and simply pushed hard where I could and rode cautiously where I couldn't" said Groombridge.
The order at the front stayed the same for the next four laps, until Groombridge snatched the lead with one lap remaining and he held on to win comfortably, slowing near the end to conserve energy and eventually winning by just seven seconds from a hard-charging Reeves.
Groombridge had been a revelation at the event last year when he powered his Suzuki through the field after a poor start to eventually win the race outright and that was the first time that had been done by an ironman.
Now he's done that twice and few would doubt he could do it again.
"I've scored back-to back wins now and I'd certainly like to come back next year and make if a hat-trick," said Groombridge.
"This sort of riding is great training for motocross and it is part of my deal now with Suzuki that I ride these big cross-country events too, so I guess it's a win-win for me and Suzuki."
