Road course · Connecticut, USA
Lime Rock Park
Lime Rock Park is a road course in Connecticut. OpenStreetMap maps one layout here, 1.47 mi (2.37 km). Below: the map, every corner with a computed line, the elevation, and where to stay and eat.
- 1.47
- Miles
- 9
- Corners
- 51
- Ft of elevation
01Track map
Lime Rock track map
Lime Rock Park (with Chicane)
Layout name from an OpenStreetMap circuit relation.
- Mapped length
- 1.47mi
- 2.37 km
- Direction
- Clockwise
- From OSM one-way tagging.
- 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)
- 1.53 mi · mapped loop differs by more than 3%; OpenStreetMap may map a different version of this layout
- Corners
- 11
- Inferred from curvature, not official turn numbers
- Sectors
- 3
- Estimated, near each third of the lap
Data notes (1)
- Length check failed — 2368 m computed vs 2462 m published (-3.8%, Published circuit length 1.53 mi (TRACK reference list; validation only — never used as geometry)). No mapped loop matches the published length (it may describe a layout OSM does not map as a closed loop, or a historic layout).
Source geometry: OpenStreetMap ↗. Something wrong? Fixing it in OpenStreetMap improves it for everyone.
02Overview
What Lime Rock is like to drive.
The lime rock park (with chicane) layout at Lime Rock is 1.47 miles with 9 corners worth setting up for and about 51 ft of elevation change. A generic track-day car in our model brakes hard 4 times a lap and is at full throttle for about 44% of the distance; the longest straight runs roughly 1001 ft.
1 of the corners are slow (under 50 mph in the model), 2 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 Lime Rock later.
03Lap at a glance
Where the speed is, and where the hills are.
- Length
- 1.47mi
- Elevation range
- 51ft
- Steepest grade
- 10%
- Braking zones
- 4model
- Full throttle
- 44% model
- Longest straight
- 1001ft
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 Lime Rock.
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
Big Bend
↱ RightmediumhairpinTRACK numbering
A medium right-hand hairpin that turns about 185°, tightening to a radius of roughly 32 m (105 ft). The model car barely brakes here, carrying about 64 mph: a lift or a confident throttle balance. The computed line turns in from the left side, takes a late apex, about 115 m after the corner’s geometric apex, and lets the car run out to the left on exit.
- Turns
- 185° right
- Tightest radius
- 32 m
- Model speed
- ≈ 64 mph
- Braking (model)
- Lift / none
- Grade
- 0.0%
- C2
The Lefthander
↰ LeftmediumessesTRACK numbering
A medium left-hand esses that turns about 115°, tightening to a radius of roughly 42 m (138 ft). The model car brakes for about 130 m (427 ft), from 85 to 58 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
- 115° left
- Tightest radius
- 42 m
- Model speed
- 85 → 58 mph
- Braking (model)
- 130 m
- Grade
- 0.0%
- C3
The Righthander
↱ RightmediumessesTRACK numbering
A medium right-hand esses that turns about 73°, tightening to a radius of roughly 30 m (98 ft). The model car brakes for about 50 m (164 ft), from 74 to 57 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
- 73° right
- Tightest radius
- 30 m
- Model speed
- 74 → 57 mph
- Braking (model)
- 50 m
- Grade
- +0.7%
- C4
Fast right-hander
↱ RightfastkinkTRACK numbering
A fast right-hand kink that turns about 26°, tightening to a radius of roughly 62 m (203 ft). The model car barely brakes here, carrying about 79 mph: a lift or a confident throttle balance. 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
- 26° right
- Tightest radius
- 62 m
- Model speed
- ≈ 79 mph
- Braking (model)
- Lift / none
- Grade
- +1.1%
- C5
South Chicane
↰ LeftslowchicaneTRACK numbering
A slow left-hand chicane that turns about 173°, tightening to a radius of roughly 17 m (56 ft). It climbs through the corner (about 2% grade). The model car brakes for about 105 m (344 ft), from 107 to 47 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
- 173° left
- Tightest radius
- 17 m
- Model speed
- 107 → 47 mph
- Braking (model)
- 105 m
- Grade
- +2.1%
- C6
South Chicane
↰ LeftmediumchicaneTRACK numbering
A medium left-hand chicane that turns about 195°, tightening to a radius of roughly 17 m (56 ft). It climbs through the corner (about 5% grade) and goes over a crest, so the car goes light at the apex. The model car barely brakes here, carrying about 54 mph: a lift or a confident throttle balance. The computed line turns in from the right side, takes a late apex, about 85 m after the corner’s geometric apex, and lets the car run out to the right on exit.
- Turns
- 195° left
- Tightest radius
- 17 m
- Model speed
- ≈ 54 mph
- Braking (model)
- Lift / none
- Grade
- +4.5% · crest
- C7
South Chicane
↰ LeftmediumchicaneTRACK numbering
A medium left-hand chicane that turns about 117°, tightening to a radius of roughly 17 m (56 ft). It climbs through the corner (about 5% grade) and goes over a crest, so the car goes light at the apex. The model car barely brakes here, carrying about 54 mph: a lift or a confident throttle balance. The computed line turns in from the right side, takes a late apex, about 70 m after the corner’s geometric apex, and lets the car run out to the right on exit.
- Turns
- 117° left
- Tightest radius
- 17 m
- Model speed
- ≈ 54 mph
- Braking (model)
- Lift / none
- Grade
- +4.7% · crest
- C8
West Bend
↱ RightmediumcornerTRACK numbering
A medium right-hand corner that turns about 69°, tightening to a radius of roughly 25 m (82 ft). The model car brakes for about 90 m (295 ft), from 103 to 71 mph. The computed line turns in from the left side, takes a late apex, about 35 m after the corner’s geometric apex, and lets the car run out to the left on exit.
- Turns
- 69° right
- Tightest radius
- 25 m
- Model speed
- 103 → 71 mph
- Braking (model)
- 90 m
- Grade
- -0.1%
- C9
Diving Turn
↱ RightfastcornerTRACK numbering
A fast right-hand corner that turns about 65°, tightening to a radius of roughly 50 m (164 ft). The model car barely brakes here, carrying about 78 mph: a lift or a confident throttle balance. 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
- 65° right
- Tightest radius
- 50 m
- Model speed
- ≈ 78 mph
- Braking (model)
- Lift / none
- Grade
- -1.6%
05Time it with TRACK
Drive Lime Rock. TRACK knows where you are.
No setup and no transponder. Start a session in the paddock and TRACK recognises Lime Rock 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 Lime Rock, 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 Lime Rock haven’t been loaded yet.
07Track days
Find an open track day at Lime Rock.
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.
- Palmer Motorsports ParkMassachusetts · 62 mi away
- Monticello Motor ClubNew York · 71 mi away
- Pocono RacewayPennsylvania · 125 mi away
- Canaan Motor ClubConnecticut · 138 mi away
Straight-line distance between venues. All 96 tracks
FAQ
Lime Rock, answered.
How long is Lime Rock?
The mapped centerline of Lime Rock Park is 1.47 mi (2.37 km) in OpenStreetMap, against a published 1.53 mi. Published lengths are measured differently, so small differences are normal.
How much elevation change is there at Lime Rock?
About 51 ft (15 m) between the lowest and highest points of the lime rock park (with chicane) layout, from USGS 3DEP elevation data sampled every 25 m. The steepest stretch is around 10%.
Which direction does Lime Rock run?
The main mapped layout runs clockwise, from one-way tagging in OpenStreetMap. Check the event’s driver briefing: some venues run reverse-direction days.
Can I time laps at Lime Rock with my phone?
Yes, with the TRACK iPhone app (beta). It recognises Lime Rock 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 Lime Rock?
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 Lime Rock?
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 Lime Rock?
This page lists hotels, campgrounds, restaurants, fuel and parts stores near Lime Rock 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 Lime Rock Park, 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.