Road course · Thailand
Bira Circuit
Bira Circuit is a road course in Thailand. OpenStreetMap maps 2 layouts here, the longest 1.48 mi (2.39 km). Below: the map, every corner with a computed line, the elevation, and where to stay and eat.
- 2.39
- Kilometres
- 10
- Corners
- —
- Ft of elevation
01Track map
Bira Circuit track map
Full circuit
Name inferred by TRACK from the mapped loops, not an official layout name.
- Mapped length
- 1.48mi
- 2.39 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.
- Corners
- 10
- 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 Bira Circuit is like to drive.
The full circuit layout at Bira Circuit is 1.49 miles with 10 corners worth setting up for. A generic track-day car in our model brakes hard 10 times a lap and is at full throttle for about 37% of the distance; the longest straight runs roughly 705 ft.
4 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. The corner notes below come from the mapped geometry, not from local knowledge; we’ll add a researched guide for Bira Circuit later.
03Lap at a glance
Where the speed is, and where the hills are.
- Length
- 1.49mi
- Elevation range
- —
- Steepest grade
- —
- Braking zones
- 10model
- Full throttle
- 37% model
- Longest straight
- 705ft
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 data for this track isn’t loaded yet.
04Corner by corner
The corners at Bira Circuit.
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
Slow left-hander
↰ LeftslowhairpinTRACK numbering
A slow left-hand hairpin that turns about 158°, tightening to a radius of roughly 20 m (66 ft). The model car brakes for about 220 m (722 ft), from 122 to 48 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
- 158° left
- Tightest radius
- 20 m
- Model speed
- 122 → 48 mph
- Braking (model)
- 220 m
- Grade
- —
- C2
Slow right-hander
↱ RightslowhairpinTRACK numbering
A slow right-hand hairpin that turns about 179°, tightening to a radius of roughly 19 m (62 ft). The model car brakes for about 105 m (344 ft), from 91 to 41 mph. The computed line turns in from the left side, takes an apex close to the geometric apex, and lets the car run out to the left on exit.
- Turns
- 179° right
- Tightest radius
- 19 m
- Model speed
- 91 → 41 mph
- Braking (model)
- 105 m
- Grade
- —
- C3
Medium right-hander
↱ RightmediumcornerTRACK numbering
A medium right-hand corner that turns about 63°, tightening to a radius of roughly 32 m (105 ft). The model car brakes for about 80 m (262 ft), from 97 to 67 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
- 63° right
- Tightest radius
- 32 m
- Model speed
- 97 → 67 mph
- Braking (model)
- 80 m
- Grade
- —
- C4
Medium right-hander
↱ RightmediumcornerTRACK numbering
A medium right-hand corner that turns about 104°, tightening to a radius of roughly 36 m (118 ft). The model car brakes for about 55 m (180 ft), from 84 to 68 mph. The computed line turns in from the left side, takes an apex close to the geometric apex, and lets the car run out to the left on exit.
- Turns
- 104° right
- Tightest radius
- 36 m
- Model speed
- 84 → 68 mph
- Braking (model)
- 55 m
- Grade
- —
- C5
Medium right-hander
↱ RightmediumchicaneTRACK numbering
A medium right-hand chicane that turns about 106°, tightening to a radius of roughly 21 m (69 ft). The model car brakes for about 105 m (344 ft), from 112 to 67 mph. The computed line turns in from the left side, takes an early apex, about 60 m before the geometric apex, and lets the car run out to the left on exit.
- Turns
- 106° right
- Tightest radius
- 21 m
- Model speed
- 112 → 67 mph
- Braking (model)
- 105 m
- Grade
- —
- C6
Medium right-hander
↱ RightmediumchicaneTRACK numbering
A medium right-hand chicane that turns about 104°, tightening to a radius of roughly 21 m (69 ft). The model car brakes for about 20 m (66 ft), from 69 to 64 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
- 104° right
- Tightest radius
- 21 m
- Model speed
- 69 → 64 mph
- Braking (model)
- 20 m
- Grade
- —
- C7
Medium left-hander
↰ LeftmediumchicaneTRACK numbering
A medium left-hand chicane that turns about 119°, tightening to a radius of roughly 13 m (43 ft). The model car brakes for about 85 m (279 ft), from 95 to 57 mph. The computed line turns in from the right side, takes a late apex, about 75 m after the corner’s geometric apex, and lets the car run out to the right on exit.
- Turns
- 119° left
- Tightest radius
- 13 m
- Model speed
- 95 → 57 mph
- Braking (model)
- 85 m
- Grade
- —
- C8
Slow left-hander
↰ LeftslowchicaneTRACK numbering
A slow left-hand chicane that turns about 115°, tightening to a radius of roughly 13 m (43 ft). The model car brakes for about 55 m (180 ft), from 77 to 43 mph. The computed line turns in from the right side, takes a late apex, about 55 m after the corner’s geometric apex, and lets the car run out to the right on exit.
- Turns
- 115° left
- Tightest radius
- 13 m
- Model speed
- 77 → 43 mph
- Braking (model)
- 55 m
- Grade
- —
- C9
Slow right-hander
↱ RightslowchicaneTRACK numbering
A slow right-hand chicane that turns about 127°, tightening to a radius of roughly 16 m (52 ft). The model car brakes for about 70 m (230 ft), from 77 to 39 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
- 127° right
- Tightest radius
- 16 m
- Model speed
- 77 → 39 mph
- Braking (model)
- 70 m
- Grade
- —
- C10
Medium right-hander
↱ RightmediumcornerTRACK numbering
A medium right-hand corner that turns about 67°, tightening to a radius of roughly 26 m (85 ft). The model car brakes for about 45 m (148 ft), from 76 to 63 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
- 67° right
- Tightest radius
- 26 m
- Model speed
- 76 → 63 mph
- Braking (model)
- 45 m
- Grade
- —
05Configurations
Every mapped loop at Bira Circuit.
TRACK finds each closed loop in the OpenStreetMap raceway network. Named layouts come from OSM circuit relations; the rest are named by length, and some may be combinations the venue never runs. Your first session confirms which one you drove.
Full circuit
1.48 mi2.39 kmDirection unknownS/F EstimatedName inferred
Layout B · 1.3 km
0.82 mi1.31 kmDirection unknownS/F EstimatedName inferred
06Time it with TRACK
Drive Bira Circuit. TRACK knows where you are.
No setup and no transponder. Start a session in the paddock and TRACK recognises Bira Circuit 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 Bira Circuit, 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
07Plan your trip
Getting there, staying, eating.
Nearby places for Bira Circuit haven’t been loaded yet.
08Track days
Find an open track day at Bira Circuit.
TRACK doesn’t copy event listings. An on-page calendar will come with an organizer data partnership.
Before your first day here
09Nearby tracks
Closest mapped venues.
- Bangsaen Street CircuitThailand · 28 mi away
- Kaeng Krachan CircuitThailand · 88 mi away
- Thailand CircuitThailand · 89 mi away
- Bonanza International CircuitThailand · 119 mi away
Straight-line distance between venues. All 889 tracks
FAQ
Bira Circuit, answered.
How long is Bira Circuit?
OpenStreetMap maps 2 closed loops at Bira Circuit, from 0.82 mi to 1.48 mi (2.39 km). These are mapped centerline lengths; the venue’s published figures can differ slightly.
Which direction does Bira Circuit run?
OpenStreetMap doesn’t record a direction for the main layout at Bira Circuit. Venues sometimes run both ways. TRACK takes the direction from your first laps.
Can I time laps at Bira Circuit with my phone?
Yes, with the TRACK iPhone app (beta). It recognises Bira Circuit 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 Bira Circuit?
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 Bira Circuit?
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 Bira Circuit?
This page lists hotels, campgrounds, restaurants, fuel and parts stores near Bira Circuit 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 Bira 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.