The cross country series consisted of four rounds, two in the North Island and two in the south.
The final round was on Saturday in Blenheim where Reardon was up against some stiff competition. He managed to claim second in class on the day, which gave him enough points to finish second in the Junior 12 to 16 NZ championship.
Reardon said that he could not achieve these top results without the support of local businesses.
His sponsors include Denis Woods, Boss Engineering, Berdeck Village (Elf Oils), Signs and Engraving, Whitelock Suzuki, Suzuki NZ and last but not least mum (Aroha) and dad (Brian).
"Fitness plays a big part in these endurance events," Brian Reardon said.
"Paul from Inspire Gym sets out a tough fitness training program for Seth."
The teenager will continue to race as a junior until March next year when he will move up into the senior grades. He also enjoys racing Motocross at the Wanganui Motorcycle club track where there is a lot of young riders with good potential coming through the ranks.
Reardon's long term goal is to compete overseas in extreme Enduro events.