Hallett Motor Racing Circuit
Tulsa, OK
Length
1.8 miles
Turns
10
Direction
Clockwise or Counter-Clockwise (bi-directional)
Elevation Change
80 ft
Elevation (ASL)
850 ft
Surface
Asphalt
Grip
High grip on fresh surface (2025); improves as rubber lays down
Brake Severity
High - T2 and T9 are heavy braking zones
FIA Certification
SCCA regional/national compliant
Nearest Airport
Tulsa International Airport (TUL) - 55 miles
Nearest Trauma Center
OSU Medical Center Tulsa (Level 1) - 45 miles
Track Character
Rolling Oklahoma terrain with moderate elevation changes. Good mix of corner types. Compact layout. Setup balanced — a well-sorted car excels here. The surface can be bumpy in spots from Oklahoma weather and soil shifting.
“Bumps and potholes in the road shift the weight bearing down on your tires. Your suspension does its best to iron this out, but bumps nevertheless reduce road holding and make the curves less predictable. As long as you are delicate with the wheel as you go through them, then there is no drama.”
How to Drive — Ben Collins
Hallett's surface can be bumpy in spots from Oklahoma weather and soil movement. Collins' principle of being "delicate with the wheel" over bumps applies in the affected sections — accept slightly wider arcs through the bumpy zones rather than fighting for the perfect line. Smooth inputs through the rough patches maintain traction better than aggressive corrections.
“A car going uphill has better traction than one going downhill. You want to use these elevation changes to your advantage and minimize their disadvantages.”
Speed Secrets — Ross Bentley
Hallett's rolling Oklahoma terrain creates moderate elevation changes that subtly affect grip throughout the lap. Bentley's elevation principle applies in every section — the traction differences are not dramatic, but over a full lap they compound. Drivers who consciously push harder on uphills and add margin on downhills gain a consistent, repeatable advantage.
“The faster and longer the corner, the less trail braking you should use and the earlier you need to be on the power; the slower and tighter the corner, the more trail braking you should use to help rotate the car.”
Ultimate Speed Secrets — Ross Bentley
Hallett's compact layout with a mix of corner types makes Bentley's rotation-vs-set framework directly applicable. The tighter corners on the back section need trail braking for rotation, especially on the bumpy patches where the car is reluctant to change direction. The faster corners on the front stretch reward early throttle and a settled car. Categorize each corner before your session and commit to the matching technique — consistency in approach yields consistency in lap times.