Lewis Wadley, in his first full season in MSA Kart racing, won the Rookie Championship at Manchester and Buxton Kart Club.
The 16-year-old from Sudbury triumphed at the testing Three Sisters circuit in Wigan.
Anyone starting the season at the circuit on Novice plates automatically competes for the Rookie Cup in their class.
The circuit is one of the fastest and demanding in the UK for drivers as each month it switches from one layout to another.
“It’s like racing at two completely different circuits,” said Wadley, who was delighted to have won the championship, despite the challenges involved.
On more than one occasion Wadley has been competing at Beccles on Saturday in a different class and had to travel straight afterwards to make the event at Wigan on Sunday.
Wadley, who is still under the guidance of the Precision Racing Team of Cheshire, has had an extremely demanding first full year in the RAC MSA Kart Racing.
Co-team manager Jake Coward said: “Lewis has shown excellent progress throughout the season, consistently improving lap times and results to now be able to compete amongst the front runners in a very competitive field.”
This was echoed by co-team manager Carl Bagley, who said: “The Junior Rotax grid at Three Sisters is probably the closest and most competitive class. It’s been a big challenge for Lewis this season, but he has consistently improved his race craft.”