It's turning into quite a season for Bay of Plenty dirt biker Brad Groombridge.

The Taupo man took his MC2 Suzuki Racing Team RM-Z450 over the finish line coming fifth overall in the four-round New Zealand Motocross Championships, which wrapped up in Taupo last month.

Taupo's Brad Groombridge (RM-Z450), now with two wins from two starts in the New Zealand Cross-country Championships. Photo by Andy McGechan, BikesportNZ.com

Brad then followed on to race a smaller version of the same bike, a Suzuki RM-Z250, in the first two of five rounds of the New Zealand Enduro Championships just over a week ago.

The 25-year-old locksmith finished runner-up at round one of that separate dirt bike competition and went on to win round two – both rounds staged back-to-back at different South Island venues over the Easter Weekend – to emerge with a shared lead in the championship with three rounds to go.

On April 2-3, he was on his 450cc bike again as he returned his attention to the parallel and similar New Zealand cross-country championships, the second of four rounds in that competition being held near Mosgiel on April 3.

Brad won the April 3 three-hour race in front of Howick's Liam Draper, Titirangi's Callan May, Mokau's four-time former national cross-country champion Adrian Smith and Pahiatua's Charles Alabaster.

Brad had also won the opening round of this series near Huntly in February, and so, with points from the best three of four rounds only to be counted as riders discard their one worst result, this means Groombridge is perhaps now just one race away from winning his first national cross-country crown.

"I got a terrible start and had to chase down the race leaders," says Brad.

"I caught up to the frontrunners on about lap three and took the lead next lap. I had a bit of a battle going on with Liam Draper but I managed to break clear of him in the end."

Rounds three and four of the national cross-country series will be held respectively in Taranaki on April 16 and, finally, near Nelson on May 14.