Road course · Michigan, USA
Flat Rock Speedway
Flat Rock Speedway is a road course in Michigan. OpenStreetMap maps 3 layouts here, the longest 0.68 mi (1.09 km). Below: the map, every corner with a computed line, the elevation, and where to stay and eat.
- 0.68
- Miles
- 6
- Corners
- 3
- Ft of elevation
01Track map
Flat Rock Speedway track map
Full circuit
Name inferred by TRACK from the mapped loops, not an official layout name.
- Mapped length
- 0.68mi
- 1.09 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
- 6
- Inferred from curvature, not official turn numbers
- Sectors
- 3
- Estimated, near each third of the lap
Data notes (1)
- Short loop (1093 m) — check it is not a kart or skid-pad circuit.
Source geometry: OpenStreetMap ↗. Something wrong? Fixing it in OpenStreetMap improves it for everyone.
02Overview
What Flat Rock Speedway is like to drive.
The full circuit layout at Flat Rock Speedway is 0.68 miles with 6 corners worth setting up for and about 3 ft of elevation change. A generic track-day car in our model brakes hard 5 times a lap and is at full throttle for about 46% of the distance; the longest straight runs roughly 492 ft.
6 of the corners are slow (under 50 mph in the model), 0 are fast (over 75 mph). The corner notes below come from the mapped geometry, not from local knowledge; we’ll add a researched guide for Flat Rock Speedway later.
03Lap at a glance
Where the speed is, and where the hills are.
- Length
- 0.68mi
- Elevation range
- 3ft
- Steepest grade
- 1%
- Braking zones
- 5model
- Full throttle
- 46% model
- Longest straight
- 492ft
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 Flat Rock Speedway.
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 right-hander
↱ RightslowcornerTRACK numbering
A slow right-hand corner that turns about 90°, tightening to a radius of roughly 7 m (23 ft). The model car brakes for about 115 m (377 ft), from 102 to 35 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
- 90° right
- Tightest radius
- 7 m
- Model speed
- 102 → 35 mph
- Braking (model)
- 115 m
- Grade
- +0.5%
- C2
Slow right-hander
↱ RightslowchicaneTRACK numbering
A slow right-hand chicane that turns about 91°, tightening to a radius of roughly 8 m (26 ft). The model car barely brakes here, carrying about 35 mph: a lift or a confident throttle balance. 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
- 91° right
- Tightest radius
- 8 m
- Model speed
- ≈ 35 mph
- Braking (model)
- Lift / none
- Grade
- -0.2%
- C3
Slow left-hander
↰ LeftslowchicaneTRACK numbering
A slow left-hand chicane that turns about 182°, tightening to a radius of roughly 7 m (23 ft). The model car brakes for about 70 m (230 ft), from 81 to 32 mph. The computed line turns in from the right side, takes an early apex, about 60 m before the geometric apex, and lets the car run out to the right on exit.
- Turns
- 182° left
- Tightest radius
- 7 m
- Model speed
- 81 → 32 mph
- Braking (model)
- 70 m
- Grade
- -0.1%
- C4
Slow left-hander
↰ LeftslowchicaneTRACK numbering
A slow left-hand chicane that turns about 182°, tightening to a radius of roughly 7 m (23 ft). The model car brakes for about 70 m (230 ft), from 81 to 32 mph. The computed line turns in from the right side, takes an early apex, about 50 m before the geometric apex, and lets the car run out to the right on exit.
- Turns
- 182° left
- Tightest radius
- 7 m
- Model speed
- 81 → 32 mph
- Braking (model)
- 70 m
- Grade
- -0.1%
- C5
Slow right-hander
↱ RightslowcornerTRACK numbering
A slow right-hand corner that turns about 88°, tightening to a radius of roughly 7 m (23 ft). The model car brakes for about 65 m (213 ft), from 77 to 36 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
- 88° right
- Tightest radius
- 7 m
- Model speed
- 77 → 36 mph
- Braking (model)
- 65 m
- Grade
- -0.2%
- C6
Slow right-hander
↱ RightslowcornerTRACK numbering
A slow right-hand corner that turns about 91°, tightening to a radius of roughly 6 m (20 ft). The model car brakes for about 60 m (197 ft), from 73 to 35 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
- 91° right
- Tightest radius
- 6 m
- Model speed
- 73 → 35 mph
- Braking (model)
- 60 m
- Grade
- -0.2%
05Configurations
Every mapped loop at Flat Rock Speedway.
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
0.68 mi1.09 kmDirection unknownS/F EstimatedName inferred
Layout B · 0.9 km
0.58 mi0.94 kmDirection unknownS/F EstimatedName inferred
Layout C · 0.9 km
0.58 mi0.94 kmDirection unknownS/F EstimatedName inferred
06Time it with TRACK
Drive Flat Rock Speedway. TRACK knows where you are.
No setup and no transponder. Start a session in the paddock and TRACK recognises Flat Rock Speedway 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 Flat Rock Speedway, 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 Flat Rock Speedway haven’t been loaded yet.
08Track days
Find an open track day at Flat Rock Speedway.
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.
- M1 ConcourseMichigan · 37 mi away
- Waterford Hills Road RacingMichigan · 43 mi away
- Michigan International SpeedwayMichigan · 48 mi away
- Mid-Ohio Sports Car CourseOhio · 102 mi away
Straight-line distance between venues. All 96 tracks
FAQ
Flat Rock Speedway, answered.
How long is Flat Rock Speedway?
OpenStreetMap maps 3 closed loops at Flat Rock Speedway, from 0.58 mi to 0.68 mi (1.09 km). These are mapped centerline lengths; the venue’s published figures can differ slightly.
How much elevation change is there at Flat Rock Speedway?
About 3 ft (1 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 1%.
Which direction does Flat Rock Speedway run?
OpenStreetMap doesn’t record a direction for the main layout at Flat Rock Speedway. Venues sometimes run both ways. TRACK takes the direction from your first laps.
Can I time laps at Flat Rock Speedway with my phone?
Yes, with the TRACK iPhone app (beta). It recognises Flat Rock Speedway 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 Flat Rock Speedway?
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 Flat Rock Speedway?
Clubs and organizers list HPDE, track days and club races on MotorsportReg. The venue’s own calendar (also linked) lists its events too. TRACK doesn’t list events itself.
Where can I stay near Flat Rock Speedway?
This page lists hotels, campgrounds, restaurants, fuel and parts stores near Flat Rock Speedway 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 Flat Rock Speedway, 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.