Road course · Oklahoma, USA
Hallett Motor Racing Circuit
Hallett Motor Racing Circuit is a road course in Oklahoma. OpenStreetMap maps one layout here, 1.76 mi (2.83 km). Below: the map, every corner with a computed line, the elevation, and where to stay and eat.
- 1.76
- Miles
- 9
- Corners
- 58
- Ft of elevation
01Track map
Hallett track map
Full circuit
Name inferred by TRACK from the mapped loops, not an official layout name.
- Mapped length
- 1.76mi
- 2.83 km
- Direction
- Not mapped
- TRACK takes it from your first drive.
- Start/finish line
- Estimated
- Estimated by TRACK from the mapped geometry and not verified on site. TRACK asks you to confirm or move it before timing laps here, when you’re stopped.
- Published length (cross-check)
- 1.80 mi · mapped loop agrees within 3%
- Corners
- 9
- Inferred from curvature, not official turn numbers
- Sectors
- 3
- Estimated, near each third of the lap
Source geometry: OpenStreetMap ↗. Something wrong? Fixing it in OpenStreetMap improves it for everyone.
02Overview
What Hallett is like to drive.
The full circuit layout at Hallett is 1.76 miles with 9 corners worth setting up for and about 58 ft of elevation change. A generic track-day car in our model brakes hard 8 times a lap and is at full throttle for about 41% of the distance; the longest straight runs roughly 951 ft.
2 of the corners are slow (under 50 mph in the model), 0 are fast (over 75 mph). There are hairpins where exit speed matters more than entry. Some apexes sit on crests, where the car goes light. The corner notes below come from the mapped geometry, not from local knowledge; we’ll add a researched guide for Hallett later.
03Lap at a glance
Where the speed is, and where the hills are.
- Length
- 1.76mi
- Elevation range
- 58ft
- Steepest grade
- 7%
- Braking zones
- 8model
- Full throttle
- 41% model
- Longest straight
- 951ft
The speed trace is a model, not a real lap: a generic track-day car (about 1.1 g of cornering grip, 1 g braking, 150 W/kg) driven on the computed line through an assumed 12 m wide track. Use it to see where the braking zones and flat-out sections are, not to predict your speeds. Elevation: USGS 3DEP 1/3 arc-second (NED 10 m) via OpenTopoData, sampled every 25 m along the mapped centerline.
04Corner by corner
The corners at Hallett.
TRACK’s own corner numbering (C1, C2…), found from the curvature of the mapped centerline. It isn’t the official turn numbering. Each diagram shows the computed line: the minimum-curvature path through an assumed 12 m wide track. It’s a geometric starting point. Your instructor’s line comes first.
- C1
Richard Calhoun
↱ RightmediumhairpinTRACK numbering
A medium right-hand hairpin that turns about 171°, tightening to a radius of roughly 29 m (95 ft). It climbs through the corner (about 2% grade) and goes over a crest, so the car goes light at the apex. The model car brakes for about 200 m (656 ft), from 115 to 51 mph. The computed line turns in from the left side, takes an early apex, about 5 m before the geometric apex, and lets the car run out to the left on exit.
- Turns
- 171° right
- Tightest radius
- 29 m
- Model speed
- 115 → 51 mph
- Braking (model)
- 200 m
- Grade
- +2.3% · crest
- C2
The Ugly
↰ LeftslowhairpinTRACK numbering
A slow left-hand hairpin that turns about 130°, tightening to a radius of roughly 20 m (66 ft). It drops through the corner (about 4% grade). The model car brakes for about 135 m (443 ft), from 106 to 43 mph. The computed line turns in from the right side, takes an apex close to the geometric apex, and lets the car run out to the right on exit.
- Turns
- 130° left
- Tightest radius
- 20 m
- Model speed
- 106 → 43 mph
- Braking (model)
- 135 m
- Grade
- -3.7%
- C3
The Good
↱ RightmediumchicaneTRACK numbering
A medium right-hand chicane that turns about 92°, tightening to a radius of roughly 37 m (121 ft). It drops through the corner (about 4% grade) and goes over a crest, so the car goes light at the apex. The model car brakes for about 45 m (148 ft), from 83 to 67 mph. The computed line turns in from the left side, takes a late apex, about 5 m after the corner’s geometric apex, and lets the car run out to the left on exit.
- Turns
- 92° right
- Tightest radius
- 37 m
- Model speed
- 83 → 67 mph
- Braking (model)
- 45 m
- Grade
- -4.1% · crest
- C4
Everybody's Favorite
↱ RightmediumhairpinTRACK numbering
A medium right-hand hairpin that turns about 143°, tightening to a radius of roughly 35 m (115 ft). The model car barely brakes here, carrying about 52 mph: a lift or a confident throttle balance. The computed line turns in from the left side, takes an early apex, about 5 m before the geometric apex, and lets the car run out to the left on exit.
- Turns
- 143° right
- Tightest radius
- 35 m
- Model speed
- ≈ 52 mph
- Braking (model)
- Lift / none
- Grade
- +1.5%
- C5
Bird
↱ RightmediumessesTRACK numbering
A medium right-hand esses that turns about 75°, tightening to a radius of roughly 28 m (92 ft). It climbs through the corner (about 2% grade). The model car brakes for about 75 m (246 ft), from 87 to 57 mph. The computed line turns in from the left side, takes a late apex, about 15 m after the corner’s geometric apex, and lets the car run out to the left on exit.
- Turns
- 75° right
- Tightest radius
- 28 m
- Model speed
- 87 → 57 mph
- Braking (model)
- 75 m
- Grade
- +2.1%
- C6
Dam
↰ LeftmediumessesTRACK numbering
A medium left-hand esses that turns about 113°, tightening to a radius of roughly 43 m (141 ft). It drops through the corner (about 2% grade) and goes over a crest, so the car goes light at the apex. The model car brakes for about 75 m (246 ft), from 87 to 57 mph. The computed line turns in from the right side, takes a late apex, about 5 m after the corner’s geometric apex, and lets the car run out to the right on exit.
- Turns
- 113° left
- Tightest radius
- 43 m
- Model speed
- 87 → 57 mph
- Braking (model)
- 75 m
- Grade
- -2.1% · crest
- C7
Snapping Turtle Chicane
↰ LeftmediumchicaneTRACK numbering
A medium left-hand chicane that turns about 98°, tightening to a radius of roughly 34 m (112 ft). The model car brakes for about 25 m (82 ft), from 75 to 60 mph. The computed line turns in from the right side, takes an early apex, about 5 m before the geometric apex, and lets the car run out to the right on exit.
- Turns
- 98° left
- Tightest radius
- 34 m
- Model speed
- 75 → 60 mph
- Braking (model)
- 25 m
- Grade
- -0.6%
- C8
Coyote Corner
↱ RightslowchicaneTRACK numbering
A slow right-hand chicane that turns about 128°, tightening to a radius of roughly 16 m (52 ft). It climbs through the corner (about 2% grade). The model car brakes for about 80 m (262 ft), from 75 to 35 mph. The computed line turns in from the left side, takes an early apex, about 10 m before the geometric apex, and lets the car run out to the left on exit.
- Turns
- 128° right
- Tightest radius
- 16 m
- Model speed
- 75 → 35 mph
- Braking (model)
- 80 m
- Grade
- +2.3%
- C9
Deadhorse
↱ RightmediumcornerTRACK numbering
A medium right-hand corner that turns about 76°, tightening to a radius of roughly 39 m (128 ft). The model car brakes for about 110 m (361 ft), from 110 to 64 mph. The computed line turns in from the left side, takes a late apex, about 15 m after the corner’s geometric apex, and lets the car run out to the left on exit.
- Turns
- 76° right
- Tightest radius
- 39 m
- Model speed
- 110 → 64 mph
- Braking (model)
- 110 m
- Grade
- +1.3%
05Time it with TRACK
Drive Hallett. TRACK knows where you are.
No setup and no transponder. Start a session in the paddock and TRACK recognises Hallett and the layout from your GPS trace, then times every lap and sector with a live delta to your best.
- 1DetectTRACK matches your first few hundred metres against every mapped layout at Hallett, including shared pavement between configurations.
- 2Confirm the lineThe start/finish line here is estimated. When you’re stopped, TRACK shows it on the map: accept it or tap to move it. You’re never asked while driving.
- 3Laps, timed retroactivelyLaps you drove before confirming are timed from the recorded trace, so you don’t lose your first session.
- 4Go furtherSync a GoPro for video with telemetry and let TRACK Engineer point out where the time is. External 10–25 Hz GPS receivers for tighter sectors are awaiting hardware validation.
- Venue and layout detection is tested on simulated drives over real OpenStreetMap circuits, not yet in a real car. Compatible GPS receivers
06Plan your trip
Getting there, staying, eating.
Nearby places for Hallett haven’t been loaded yet.
07Track days
Find an open track day at Hallett.
TRACK doesn’t copy event listings. An on-page calendar will come with an organizer data partnership.
Before your first day here
08Nearby tracks
Closest mapped venues.
- Heartland Motorsports ParkKansas · 193 mi away
- Eagles Canyon RacewayTexas · 203 mi away
- Kansas SpeedwayKansas · 222 mi away
- Texas Motor SpeedwayTexas · 223 mi away
Straight-line distance between venues. All 96 tracks
FAQ
Hallett, answered.
How long is Hallett?
The mapped centerline of Hallett Motor Racing Circuit is 1.76 mi (2.83 km) in OpenStreetMap, against a published 1.80 mi. Published lengths are measured differently, so small differences are normal.
How much elevation change is there at Hallett?
About 58 ft (18 m) between the lowest and highest points of the full circuit layout, from USGS 3DEP elevation data sampled every 25 m. The steepest stretch is around 7%.
Which direction does Hallett run?
OpenStreetMap doesn’t record a direction for the main layout at Hallett. Venues sometimes run both ways. TRACK takes the direction from your first laps.
Can I time laps at Hallett with my phone?
Yes, with the TRACK iPhone app (beta). It recognises Hallett and the layout you’re driving from GPS, then times laps and sectors. A phone’s GPS is good for lap times; an external 10–25 Hz receiver tightens sector splits.
Where is the start/finish line at Hallett?
TRACK estimates the line from the mapped geometry (usually beside the pit lane, or on the longest straight). It isn’t verified on site, so the app asks you to confirm or move it before timing your first session here.
How do I find track days at Hallett?
Clubs and organizers list HPDE, track days and club races on MotorsportReg. The venue’s own calendar lists its events too. TRACK doesn’t list events itself.
Where can I stay near Hallett?
This page lists hotels, campgrounds, restaurants, fuel and parts stores near Hallett from OpenStreetMap, with straight-line distances. Book early for big event weekends.
Track geometry and nearby places: © OpenStreetMap contributors, available under the Open Database License 1.0 (via the TRACK Atlas, snapshot 2026-10-17). Elevation: USGS 3DEP (public domain). Lengths are mapped centerlines, not official figures. The computed line and speed trace are a model. No start/finish line has been verified on site.
TRACK is not affiliated with or endorsed by Hallett Motor Racing Circuit, MotorsportReg or any business listed here. The venue name identifies the location only and belongs to its owner. TRACK shows no lap records or official results for this venue. Driving advice is general: your instructor, the event’s rules and the venue’s rules come first.